| Rank | Company | 2012 K-12 Revenue ($) |
| 1 | DLR Group | $38,250,000 |
| 2 | SHW Group | $32,328,843 |
| 3 | PBK | $31,760,000 |
| 4 | IBI Group | $27,977,860 |
| 5 | HMC Architects | $25,407,164 |
| 6 | Stantec | $21,586,209 |
| 7 | Fanning/Howey Associates | $20,247,000 |
| 8 | Perkins+Will | $19,938,211 |
| 9 | Heery International | $16,561,303 |
| 10 | LPA | $14,438,017 |
| 11 | NTD Architecture | $13,129,833 |
| 12 | Perkins Eastman | $13,050,000 |
| 13 | Corgan | $12,086,022 |
| 14 | S/L/A/M Collaborative, The | $11,581,000 |
| 15 | NAC|Architecture | $11,460,923 |
| 16 | Moseley Architects | $11,434,168 |
| 17 | Fletcher-Thompson | $9,620,000 |
| 18 | FGM Architects | $9,288,111 |
| 19 | Leo A Daly | $8,661,304 |
| 20 | SMMA | Symmes Maini & McKee Associates | $7,900,000 |
| 21 | Wight & Co. | $6,992,632 |
| 22 | SEI Design Group | $6,898,000 |
| 23 | DLA Architects | $5,999,790 |
| 24 | SLATERPAULL Architects | $5,726,536 |
| 25 | Legat Architects | $5,310,000 |
| 26 | LS3P | $5,111,880 |
| 27 | Cuningham Group Architecture | $4,866,792 |
| 28 | Little | $4,283,800 |
| 29 | Ashley McGraw Architects | $4,032,194 |
| 30 | EwingCole | $4,000,000 |
| 31 | BBS Architects, Landscape Architects and Engineers | $3,350,000 |
| 32 | Harley Ellis Devereaux | $3,134,000 |
| 33 | Harvard Jolly Architecture | $2,910,511 |
| 34 | CTA Architects Engineers | $2,868,705 |
| 35 | Cooper Carry | $2,856,159 |
| 36 | Astorino | $2,710,000 |
| 37 | Goodwyn, Mills & Cawood | $2,620,000 |
| 38 | FXFOWLE Architects | $2,610,644 |
| 39 | Moody Nolan | $2,500,000 |
| 40 | Reynolds, Smith and Hills | $2,180,000 |
| 41 | Swanke Hayden Connell Asrchitects | $2,000,000 |
| 42 | GBBN Architects | $1,600,000 |
| 43 | Massa Montalto Architects | $1,596,189 |
| 44 | KZF Design | $1,548,386 |
| 45 | PGAL | $1,520,000 |
| 46 | Smallwood, Reynolds, Stewart, Stewart & Associates | $1,490,039 |
| 47 | Shepley Bulfinch Richardson & Abbott | $1,413,440 |
| 48 | Mithun | $1,189,000 |
| 49 | Environetics | $1,188,686 |
| 50 | HLW International | $1,000,000 |
| 51 | CASCO | $940,000 |
| 52 | Ennead Architects | $880,000 |
| 53 | Gensler | $800,000 |
| 54 | Sasaki Associates | $797,830 |
| 55 | Albert Kahn Family of Companies | $687,568 |
| 56 | HNTB Archtecture | $629,682 |
| 57 | CO Architects | $629,000 |
| 58 | OZ Architecture | $565,653 |
| 59 | Westlake Reed Leskosky | $500,000 |
| 60 | Good Fulton & Farrell | $482,510 |
| 61 | Rule Joy Trammell + Rubio | $450,000 |
| 62 | Kirksey Architecture | $423,050 |
| 63 | DesignGroup | $408,989 |
| 64 | LMN Architects | $379,300 |
| 65 | Hoffmann Architects | $337,000 |
| 66 | Morris Architects | $300,000 |
| 66 | Sherlock, Smith & Adams | $300,000 |
| 68 | Davis Brody Bond | $279,429 |
| 69 | TEG Architects - The Estopinal Group | $278,901 |
| 70 | RSP Architects | $261,000 |
| 71 | LawKingdon Architecture | $250,000 |
| 72 | JRS Architect | $225,000 |
| 73 | Nadel | $218,464 |
| 74 | Epstein | $205,000 |
| 75 | Adache Group Architects | $200,000 |
| 76 | VOA Associates | $162,515 |
| 77 | SRG Partnership | $152,268 |
| 78 | Ware Malcomb | $75,000 |
| 79 | Niles Bolton Associates | $50,757 |
| 80 | Hensley Lamkin Rachel | $41,000 |
| 81 | Omniplan Architects | $34,217 |
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