{
"count": 267,
"failed_exams": 23,
"never_passed": [
"rel-bays",
"rel-ceramicists",
"rel-plays",
"rel-urbanplanners"
],
"items": [
{
"id": "acoustics",
"base": "acoustics",
"name": "Acoustics & Sound",
"group": "Physical science",
"takes": [
"beat",
"doppler",
"db_sum",
"db_distance",
"db_ratio",
"intensity_ratio",
"string",
"pipe_closed",
"pipe_open",
"wavelength",
"frequency",
"speed"
],
"heldout": [
69,
3,
69
],
"card": "acoustics",
"admitted": "2026-09-29"
},
{
"id": "additive-v2",
"base": "additive",
"name": "Additive Manufacturing & Design",
"group": "Physical science",
"takes": [
"scad_volume",
"mesh_vertices",
"mesh_edges",
"mesh_faces",
"scale_amount",
"scale_factor",
"extrude_time"
],
"heldout": [
20,
1,
20
],
"card": "additive-v2",
"admitted": "2026-09-29"
},
{
"id": "agriculture-v2",
"base": "agriculture",
"name": "Agriculture & Crop Science v2",
"group": "Earth & life",
"takes": [
"fert_product",
"nutrient_lb",
"seeds_per_acre",
"seeds_needed",
"yield_kgha",
"yield_tha",
"acre_inch"
],
"heldout": [
17,
1,
17
],
"card": "agriculture-v2",
"admitted": "2026-09-29"
},
{
"id": "airquality",
"base": "airquality",
"name": "Air Quality & Atmosphere",
"group": "Earth & life",
"takes": [
"aqi",
"overall",
"category"
],
"heldout": [
30,
2,
38
],
"card": "airquality",
"admitted": "2026-09-29"
},
{
"id": "algorithms",
"base": "algorithms",
"name": "Algorithms & Data Structures",
"group": "Mathematics",
"takes": [
"shortest_path",
"unreachable",
"mst",
"disconnected",
"bsearch",
"not_found",
"sorted",
"complexity"
],
"heldout": [
42,
1,
42
],
"card": "algorithms",
"admitted": "2026-09-29"
},
{
"id": "anatomy",
"base": "anatomy",
"name": "Anatomy & Physiology (reference facts)",
"group": "Earth & life",
"takes": [
"count",
"superlative",
"produces"
],
"heldout": [
9,
0,
11
],
"card": "anatomy",
"admitted": "2026-09-29"
},
{
"id": "architecture",
"base": "architecture",
"name": "Architecture (zoning and code arithmetic)",
"group": "Humanities",
"takes": [
"far",
"max_floor",
"coverage",
"occupant_load",
"egress_width",
"ramp_run"
],
"heldout": [
10,
1,
10
],
"card": "architecture",
"admitted": "2026-09-29"
},
{
"id": "arthistory",
"base": "arthistory",
"name": "Art History (attribution)",
"group": "Humanities",
"takes": [
"artist"
],
"heldout": [
11,
6,
11
],
"card": "arthistory",
"admitted": "2026-09-29"
},
{
"id": "astronomy-v3",
"base": "astronomy",
"name": "Astronomy v3",
"group": "Space",
"takes": [
"mass",
"diameter",
"density",
"gravity",
"escape_velocity",
"length_of_day",
"rotation_period",
"distance_from_the_sun",
"orbital_period",
"orbital_velocity",
"orbital_eccentricity",
"axial_tilt",
"mean_temperature",
"surface_pressure"
],
"heldout": [
137,
9,
138
],
"card": "astronomy-v3",
"admitted": "2026-09-29"
},
{
"id": "biology",
"base": "biology",
"name": "Biology (molecular sequences)",
"group": "Earth & life",
"takes": [
"codon",
"gc",
"revcomp",
"complement",
"transcribe",
"translate",
"protein_len"
],
"heldout": [
15,
1,
15
],
"card": "biology",
"admitted": "2026-09-29"
},
{
"id": "bodies-v2",
"base": "bodies",
"name": "Gravity on Other Worlds (v2)",
"group": "Space",
"takes": [
"weight",
"fall_time",
"impact_speed",
"pendulum_period"
],
"heldout": [
38,
2,
38
],
"card": null,
"admitted": "2026-10-09"
},
{
"id": "botany",
"base": "botany",
"name": "Botany & Plants",
"group": "Earth & life",
"takes": [
"botany"
],
"heldout": [
7,
1,
9
],
"card": "botany",
"admitted": "2026-09-29"
},
{
"id": "calculus",
"base": "calculus",
"name": "Algebra & Calculus",
"group": "Mathematics",
"takes": [
"derivative",
"derivative_at",
"antiderivative",
"definite"
],
"heldout": [
62,
2,
62
],
"card": "calculus",
"admitted": "2026-09-29"
},
{
"id": "carboncapture",
"base": "carboncapture",
"name": "Carbon Capture & Climate Technology",
"group": "Physical science",
"takes": [
"c_to_co2",
"co2_to_c",
"fuel_co2",
"co2_per_mile",
"captured",
"capture_energy"
],
"heldout": [
14,
2,
14
],
"card": "carboncapture",
"admitted": "2026-09-29"
},
{
"id": "carbonmat",
"base": "carbonmat",
"name": "Carbon Materials (Nanotubes & Graphene)",
"group": "Physical science",
"takes": [
"cnt_diameter",
"cnt_angle",
"cnt_type",
"cnt_kind",
"graphene_layers",
"graphene_mass"
],
"heldout": [
17,
1,
17
],
"card": "carbonmat",
"admitted": "2026-09-29"
},
{
"id": "chemistry-v3",
"base": "chemistry",
"name": "Chemistry v3",
"group": "Physical science",
"takes": [
"molar_mass",
"g2mol",
"mol2g",
"percent",
"atomic_mass",
"atomic_number",
"electronegativity",
"melting_point",
"boiling_point",
"density",
"electron_configuration",
"ionization_energy",
"standard_state",
"group_block"
],
"heldout": [
223,
9,
281
],
"card": "chemistry-v3",
"admitted": "2026-09-29"
},
{
"id": "childdev",
"base": "childdev",
"name": "Child Development",
"group": "Everyday",
"takes": [
"childdev"
],
"heldout": [
9,
1,
9
],
"card": "childdev",
"admitted": "2026-09-29"
},
{
"id": "climate",
"base": "climate",
"name": "Climate Science",
"group": "Earth & life",
"takes": [
"forcing",
"warming_ecs",
"warming_lambda",
"ppm_to_gtc",
"ppm_to_gtco2",
"mass_to_ppm",
"effective_temp",
"co2e"
],
"heldout": [
24,
3,
24
],
"card": "climate",
"admitted": "2026-09-29"
},
{
"id": "coldchain-v2",
"base": "coldchain",
"name": "Food Safety & Cold Chain v2",
"group": "Everyday",
"takes": [
"cooling_check",
"cold_hold",
"hot_hold",
"cook_temp",
"reheat",
"tphc",
"tphc_rule",
"date_mark",
"date_rule",
"danger_zone"
],
"heldout": [
29,
2,
30
],
"card": "coldchain-v2",
"admitted": "2026-09-29"
},
{
"id": "cooking-v3",
"base": "cooking",
"name": "Cooking & Nutrition v3",
"group": "Everyday",
"takes": [
"nutrient"
],
"heldout": [
224,
10,
228
],
"card": "cooking-v3",
"admitted": "2026-09-29"
},
{
"id": "crafts",
"base": "crafts",
"name": "Arts & Crafts",
"group": "Everyday",
"takes": [
"mix_ryb",
"mix_rgb",
"complement",
"cast_on",
"quilt_blocks",
"cut_size",
"yards",
"mat_outer",
"clay_fired"
],
"heldout": [
14,
1,
14
],
"card": "crafts",
"admitted": "2026-09-29"
},
{
"id": "cyber",
"base": "cyber",
"name": "Cybersecurity (Defensive)",
"group": "Computing",
"takes": [
"keyspace",
"entropy",
"brute_worst",
"brute_avg",
"base64_len",
"digest_hex",
"birthday"
],
"heldout": [
16,
1,
20
],
"card": "cyber",
"admitted": "2026-09-29"
},
{
"id": "dataformats",
"base": "dataformats",
"name": "Data Formats",
"group": "Computing",
"takes": [
"json_valid",
"json_invalid",
"b64_decode",
"b64_encode",
"hash",
"url_decode",
"url_encode",
"base",
"weekday"
],
"heldout": [
93,
3,
93
],
"card": "dataformats",
"admitted": "2026-09-29"
},
{
"id": "decay",
"base": "decay",
"name": "Radioactive Decay",
"group": "Physical science",
"takes": [
"remaining_amount",
"remaining_fraction",
"time_to_fraction",
"half_lives"
],
"heldout": [
34,
2,
42
],
"card": null,
"admitted": "2026-10-08"
},
{
"id": "densities",
"base": "densities",
"name": "Material Densities",
"group": "Physical science",
"takes": [
"density",
"mass",
"volume",
"floats"
],
"heldout": [
51,
3,
51
],
"card": null,
"admitted": "2026-10-08"
},
{
"id": "ecology",
"base": "ecology",
"name": "Ecology & Ecosystems",
"group": "Earth & life",
"takes": [
"shannon",
"evenness",
"simpson_d",
"simpson_div",
"simpson_inv",
"richness",
"exp_n",
"doubling",
"geometric_n",
"logistic_rate",
"logistic_n"
],
"heldout": [
13,
0,
13
],
"card": "ecology",
"admitted": "2026-09-29"
},
{
"id": "economics",
"base": "economics",
"name": "Economics",
"group": "Humanities",
"takes": [
"elasticity",
"inflation",
"real_value",
"real_rate",
"growth",
"multiplier",
"tax_multiplier",
"unemployment",
"participation",
"deflator",
"rule70"
],
"heldout": [
26,
3,
39
],
"card": "economics",
"admitted": "2026-09-29"
},
{
"id": "electrical",
"base": "electrical",
"name": "Electrical Engineering (Power)",
"group": "Physical science",
"takes": [
"three_phase_kw",
"three_phase_kva",
"three_phase_current",
"wye_vline",
"delta_iline",
"pf",
"reactive",
"pf_correction",
"xfmr_v",
"xfmr_i",
"hp_kw",
"kw_hp"
],
"heldout": [
22,
2,
24
],
"card": "electrical",
"admitted": "2026-09-29"
},
{
"id": "electronics-r2",
"base": "electronics",
"name": "Electronics & Circuits (r2: re-gated under gate v2)",
"group": "Physical science",
"takes": [
"current",
"voltage",
"resistance",
"power",
"series",
"parallel",
"divider",
"rc",
"led"
],
"heldout": [
111,
3,
111
],
"card": "electronics-r2",
"admitted": "2026-09-29"
},
{
"id": "embedded",
"base": "embedded",
"name": "Embedded Systems & Microcontrollers",
"group": "Computing",
"takes": [
"tick",
"tick_freq",
"overflow",
"overflow_freq",
"ctc",
"uart_time",
"uart_throughput",
"ubrr",
"address_space",
"address_bytes"
],
"heldout": [
25,
1,
25
],
"card": "embedded",
"admitted": "2026-09-29"
},
{
"id": "energy-v3",
"base": "energy",
"name": "Home Energy & Solar v3",
"group": "Physical science",
"takes": [
"payback",
"never",
"runtime",
"solar_yield",
"swap_saving",
"cost",
"energy"
],
"heldout": [
69,
3,
70
],
"card": "energy-v3",
"admitted": "2026-09-29"
},
{
"id": "entomology",
"base": "entomology",
"name": "Entomology",
"group": "Earth & life",
"takes": [
"entomology"
],
"heldout": [
9,
1,
9
],
"card": "entomology",
"admitted": "2026-09-29"
},
{
"id": "etiquette",
"base": "etiquette",
"name": "Etiquette & Communication",
"group": "Everyday",
"takes": [
"etiquette"
],
"heldout": [
9,
1,
9
],
"card": "etiquette",
"admitted": "2026-09-29"
},
{
"id": "finance-v2",
"base": "finance",
"name": "Personal Finance Arithmetic v2",
"group": "Everyday",
"takes": [
"apy",
"doubling",
"loan_interest",
"loan_payment",
"savings_goal",
"simple_interest",
"compound"
],
"heldout": [
64,
3,
64
],
"card": "finance-v2",
"admitted": "2026-09-29"
},
{
"id": "firesafety-v2",
"base": "firesafety",
"name": "Fire Safety & Preparedness v2",
"group": "Everyday",
"takes": [
"firesafety"
],
"heldout": [
10,
1,
10
],
"card": "firesafety-v2",
"admitted": "2026-09-29"
},
{
"id": "firstaid",
"base": "firstaid",
"name": "First Aid (reference)",
"group": "Everyday",
"takes": [
"firstaid"
],
"heldout": [
9,
1,
9
],
"card": "firstaid",
"admitted": "2026-09-29"
},
{
"id": "fleet",
"base": "fleet",
"name": "Fleet & Vehicle Arithmetic",
"group": "Everyday",
"takes": [
"braking",
"stopping",
"to_lpk",
"to_mpg",
"co2",
"trip_cost",
"trip_litres",
"trip_gallons"
],
"heldout": [
54,
2,
54
],
"card": "fleet",
"admitted": "2026-09-29"
},
{
"id": "fluids",
"base": "fluids",
"name": "Fluid Statics",
"group": "Physical science",
"takes": [
"pressure_gauge",
"pressure_abs",
"buoyant_force",
"submerged_fraction",
"sinks"
],
"heldout": [
34,
2,
34
],
"card": null,
"admitted": "2026-10-08"
},
{
"id": "forestry",
"base": "forestry",
"name": "Forestry",
"group": "Earth & life",
"takes": [
"basal_area",
"ba_per_acre",
"basal_area_m2",
"tpa",
"height",
"smalian",
"doyle"
],
"heldout": [
14,
1,
16
],
"card": "forestry",
"admitted": "2026-09-29"
},
{
"id": "fuels",
"base": "fuels",
"name": "Fuel Energy and Combustion CO2",
"group": "Physical science",
"takes": [
"energy",
"co2",
"mass_needed",
"ncv"
],
"heldout": [
42,
2,
42
],
"card": null,
"admitted": "2026-10-08"
},
{
"id": "games-v3",
"base": "games",
"name": "Games & Puzzles",
"group": "Everyday",
"takes": [
"poker_prob",
"poker_count",
"dice_sum",
"at_least_one",
"card_one",
"card_k",
"card_k_repl",
"anagrams"
],
"heldout": [
18,
1,
18
],
"card": "games-v3",
"admitted": "2026-09-29"
},
{
"id": "gardening",
"base": "gardening",
"name": "Gardening",
"group": "Everyday",
"takes": [
"cubic_feet",
"cubic_yards",
"bags",
"plants_grid",
"fert_area",
"water_gal"
],
"heldout": [
14,
1,
15
],
"card": "gardening",
"admitted": "2026-09-29"
},
{
"id": "genetics-v2",
"base": "genetics",
"name": "Genetics v2",
"group": "Earth & life",
"takes": [
"genotype_prob",
"phenotype_prob",
"pheno_ratio",
"geno_ratio",
"hw_carrier",
"hw_p2",
"hw_p",
"hw_q"
],
"heldout": [
15,
1,
20
],
"card": "genetics-v2",
"admitted": "2026-09-29"
},
{
"id": "geography",
"base": "geography",
"name": "World Geography",
"group": "Earth & life",
"takes": [
"capital",
"capital_split",
"gc_km",
"gc_miles",
"antipode",
"solar_time",
"lat_km"
],
"heldout": [
9,
1,
9
],
"card": "geography",
"admitted": "2026-09-29"
},
{
"id": "geology",
"base": "geology",
"name": "Earth Science & Geology",
"group": "Earth & life",
"takes": [
"fraction_left",
"age_fraction",
"age_ratio",
"plate_distance",
"plate_rate",
"depth_temp"
],
"heldout": [
18,
2,
18
],
"card": "geology",
"admitted": "2026-09-29"
},
{
"id": "geometry-v4",
"base": "geometry",
"name": "Geometry v4",
"group": "Mathematics",
"takes": [
"circle_area",
"circumference",
"sphere_volume",
"sphere_surface",
"cylinder_volume",
"cylinder_surface",
"cone_volume",
"cube_volume",
"cube_surface",
"box_volume",
"rect_area",
"rect_perimeter",
"square_area",
"square_perimeter"
],
"heldout": [
93,
4,
93
],
"card": "geometry-v4",
"admitted": "2026-09-29"
},
{
"id": "git",
"base": "git",
"name": "Version Control (git)",
"group": "Computing",
"takes": [
"git_cmd"
],
"heldout": [
7,
1,
10
],
"card": "git",
"admitted": "2026-09-29"
},
{
"id": "government",
"base": "government",
"name": "Government & Political Science (US Constitution)",
"group": "Humanities",
"takes": [
"amend_for_topic",
"amend_subject",
"article_subject",
"fact_number"
],
"heldout": [
10,
1,
14
],
"card": "government",
"admitted": "2026-09-29"
},
{
"id": "grammar",
"base": "grammar",
"name": "English Language & Grammar (irregular forms)",
"group": "Humanities",
"takes": [
"past_tense",
"past_participle",
"plural",
"comparative",
"superlative"
],
"heldout": [
15,
1,
15
],
"card": "grammar",
"admitted": "2026-09-29"
},
{
"id": "greenhouse",
"base": "greenhouse",
"name": "Greenhouse & Controlled Agriculture",
"group": "Earth & life",
"takes": [
"vpd",
"vpd_leaf",
"dli",
"ppfd_needed",
"gdd",
"plant_count"
],
"heldout": [
45,
3,
45
],
"card": "greenhouse",
"admitted": "2026-09-29"
},
{
"id": "hvac",
"base": "hvac",
"name": "Building Environment & HVAC",
"group": "Physical science",
"takes": [
"tons",
"btuh",
"ach",
"cfm_needed",
"sensible",
"seasonal",
"conduction"
],
"heldout": [
42,
3,
42
],
"card": "hvac",
"admitted": "2026-09-29"
},
{
"id": "hydrology",
"base": "hydrology",
"name": "Hydrology & Rivers",
"group": "Earth & life",
"takes": [
"rational",
"harvest",
"harvest_si",
"manning_q",
"manning_v",
"fill_time",
"continuity"
],
"heldout": [
52,
3,
52
],
"card": "hydrology",
"admitted": "2026-09-29"
},
{
"id": "iot",
"base": "iot",
"name": "Sensor Networks & IoT",
"group": "Computing",
"takes": [
"adc_voltage",
"adc_code",
"adc_lsb",
"avg_current",
"battery_life",
"nyquist",
"data_rate",
"storage_day"
],
"heldout": [
27,
2,
27
],
"card": "iot",
"admitted": "2026-09-29"
},
{
"id": "javascript",
"base": "javascript",
"name": "JavaScript",
"group": "Computing",
"takes": [
"javascript"
],
"heldout": [
10,
2,
10
],
"card": "javascript",
"admitted": "2026-09-29"
},
{
"id": "labsolutions",
"base": "labsolutions",
"name": "Laboratory Solutions",
"group": "Everyday",
"takes": [
"wv_mass",
"dilution",
"molarity",
"mass_needed"
],
"heldout": [
26,
1,
27
],
"card": "labsolutions",
"admitted": "2026-09-29"
},
{
"id": "law",
"base": "law",
"name": "Law: General Concepts",
"group": "Humanities",
"takes": [
"law"
],
"heldout": [
9,
1,
9
],
"card": "law",
"admitted": "2026-09-29"
},
{
"id": "library",
"base": "library",
"name": "Library & Archive Management",
"group": "Humanities",
"takes": [
"lcc_class",
"lcc_sub",
"lcc_for_subject",
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],
"card": "worldhistory",
"admitted": "2026-09-29"
}
]
}