| Kimball Day Care Center & Kindergarten | Po Box 450, Barrington, IL 60011 | Center |
| Kingswood Preschool | 401 W Dundee Rd, Buffalo Grove, IL 60089 | Preschool |
| Knowledge Learning Corp / Knowledge Beginn | 1375 Remington Rd, Schaumburg, IL 60173 | Center |
| Knowledge Learning Corporation | 22w300 Sunnyside Rd, Medinah, IL 60157 | Center |
| Kripa Montessori School | 603 Randi Ln, Hoffman Estates, IL 60169 | Center |
| Kripa Montessori School | 379 Bartlett Plz, Bartlett, IL 60103 | Preschool |
| Kripa Montessori School | 1021 N SALEM DR, Schaumburg, IL 60194 | Center |
| Kripa Montessori School HE | 1015 W Golf Rd, Hoffman Estates, IL 60169 | Preschool |
| Lakeview Elementary School Preschool | 615 Lakeview Ln, Hoffman Estates, IL 60169 | Preschool |
| Learning Loft | 655 N 1st Bank Dr, Palatine, IL 60067 | Center |
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| Let Us Care Montessori School | 206 Rush St, Roselle, IL 60172 | Preschool |
| Lifelink Bensenville Home Soc Headstart | 331 S York Rd, Bensenville, IL 60106 | Preschool |
| Lifelink Head Start Gary Ave | 331 S York Rd, Bensenville, IL 60106 | Preschool |
| Lifelink Headstart - Wheaton | 331 S York Rd, Bensenville, IL 60106 | Preschool |
| Lincoln Prairie School | 500 Hillcrest Blvd, Hoffman Estates, IL 60169 | Preschool |
| Little Angels Christian Preschool | 647 Dundee Ave, Barrington, IL 60010 | Preschool |
| Little Bison Day Care Center | 1100 W Dundee Rd, Buffalo Grove, IL 60089 | Preschool |
| Little Lamb Christian Preschool & Kindergarten | 946 E Thacker St, Des Plaines, IL 60016 | Preschool |
| Little Learners Educational Center | 1060 W Rand Rd, Arlington Heights, IL 60004 | Preschool |
| Little Prince Day Care II | 233 N MILL RD, Addison, IL 60101 | Center |
| Little Saints Christian Preschool | 630 S Quentin Rd, Palatine, IL 60067 | Preschool |
| Little University | 1250 Radcliffe Rd, Buffalo Grove, IL 60089 | Preschool |
| Living Lord Lutheran Church Preschool | 1044 Congress Dr, Bartlett, IL 60103 | Preschool |
| Long Grove Country School | 20400 Old Hicks Rd, Lake Zurich, IL 60047 | Preschool |
| Lotus Montessori School | 3805 Huntington Blvd, Hoffman Estates, IL 60192 | Preschool |
| Lutheran School of St Luke | 410 S Rush St, Itasca, IL 60143 | Preschool |
| Mark Twain Elementary School Preschool | 515 E Merle Ln, Wheeling, IL 60090 | Preschool |
| Marklund Day School | 164 S Prairie Ave, Bloomingdale, IL 60108 | Preschool |
| Master's Christian Pre-School | 3n580 Kuhn Road, Carol Stream, IL 60188 | Preschool |
| Medinah Christian School Preschool | 900 Foster Ave, Medinah, IL 60157 | Preschool |
| Michael Collins Elementary School Preschool | 407 Summit Dr, Schaumburg, IL 60193 | Preschool |
| Mini Steps | 5600 Arlington Dr E, Hanover Park, IL 60133 | Center |
| Montessori Academy of Glen Ellen Preschool | 927 N Main St, Glen Ellyn, IL 60137 | Preschool |
| Montessori Academy of Glen Ellyn | 927 N Main St, Glen Ellyn, IL 60137 | Preschool |
| Montessori Learning Center | 1011 W Golf Rd # 1015, Hoffman Estates, IL 60169 | Center |
| Montessori Learning Center | 1819 N Yale Ave, Arlington Heights, IL 60004 | Preschool |
| Montessori School of Long Grove | 1115 Rfd, Lake Zurich, IL 60047 | Preschool |
| Montessori School of Long Grove Preschool | 1115 Rfd, Lake Zurich, IL 60047 | Preschool |
| Montessori School of North Hoffman Preschool | 1200 Freeman Rd, Hoffman Estates, IL 60192 | Preschool |
| Montessori Schoolhouse | 501 S Emerson St, Mount Prospect, IL 60056 | Preschool |
| Motorola Child Care & Education Centers | 1315 E Algonquin Road, Schaumburg, IL 60196 | Center |
| Mount Prospect Child Care Center | 406 E Northwest Hwy # 408, Mount Prospect, IL 60056 | Preschool |
| Nathan Hale Elementary School Preschool | 1300 W Wise Rd, Schaumburg, IL 60193 | Preschool |
| Neil Armstrong Elementary School Preschool | 1320 Kingsdale Rd, Hoffman Estates, IL 60169 | Preschool |
| New Morning Childrens House | 400 N Walnut St, Itasca, IL 60143 | Preschool |
| North Austin Lutheran Head Start | 1001 E Touhy Ave Ste 50, Des Plaines, IL 60018 | Preschool |
| Northwest Suburban Day Care Center | 1755 Howard Ave, Des Plaines, IL 60018 | Center |
| Northwest Suburban Montessori School | 800 N Fernandez Ave, Arlington Heights, IL 60004 | Preschool |
| Northwest Suburban Montessori School Preschool | 800 N Fernandez Ave, Arlington Heights, IL 60004 | Preschool |
| Orchard Place Elementary School Preschool | 2727 Maple St, Des Plaines, IL 60018 | Preschool |
| Our Lady of Destiny Preschool | 1880 Ash St, Des Plaines, IL 60018 | Preschool |
| Our Lady of The Wayside Preschool | 432 S Mitchell Ave, Arlington Heights, IL 60005 | Preschool |
| Our Savior Lutheran Church | 1244 W Army Trail Rd, Carol Stream, IL 60188 | Preschool |
| Outreach Community Center Jubilee Neighbor | 345 S President St, Carol Stream, IL 60188 | Preschool |
| Palatine Park Dist. Preschool-maple Park | 250 E Wood St, Palatine, IL 60067 | Preschool |
| Palatine Park District Preschool - Birchwood | 250 E Wood St, Palatine, IL 60067 | Preschool |
| Palatine Park District Preschool - Eagle | 250 E Wood St, Palatine, IL 60067 | Preschool |
| Palatine Park District Preschool Parkside | 250 E Wood St, Palatine, IL 60067 | Preschool |
| Park View Montessori | 805 N Burning Bush, Mount Prospect, IL 60056 | Preschool |
| Park View Montessori School | 805 N Burning Bush Ln, Mount Prospect, IL 60056 | Preschool |
| Pheasant Ridge Primary School Preschool | 43 E Stevenson Dr, Glendale Heights, IL 60139 | Preschool |
| Pixi & Dixi Day Care Center | 1054 Fairway Dr, Bensenville, IL 60106 | Center |
| Plainfield Elementary School Preschool | 1850 Plainfield Dr, Des Plaines, IL 60018 | Preschool |
| Plato Academy Preschool | 733 Lee St Ste 200, Des Plaines, IL 60016 | Preschool |
| Poko Loko Child Care Center | 404 S Elmhurst Rd, Wheeling, IL 60090 | Center |
| Prairieview Elementary School Preschool | 285 Mayflower Ln, Bartlett, IL 60103 | Preschool |
| Precious Angels | 1833 W Golf Rd, Schaumburg, IL 60194 | Center |
| Prince of Peace Lutheran Preschool | 930 W Higgins Rd, Schaumburg, IL 60195 | Preschool |
| Pythagoras Childrens Academy Preschool | 893 N Church Rd, Elmhurst, IL 60126 | Preschool |
| Queen of The Rosary School Preschool | 690 W Elk Grove Blvd, Elk Grove Village, IL 60007 | Preschool |
| Rainbow Academy | 1280 Kuhn Rd, Carol Stream, IL 60188 | Preschool |
| Ray Walker Head Start | 653 Windsor Dr, Schaumburg, IL 60193 | Preschool |
| Raymond Benson Primary School Preschool | 301 E Washington St, Itasca, IL 60143 | Preschool |
| Red Wagon Child Care Center | 1225 E Davis St, Arlington Heights, IL 60005 | Center |
| Reskin Elementary School Preschool | 1555 Ardmore Ave, Glendale Heights, IL 60139 | Preschool |
| Ridge Family Center For Learning | 650 Ridge Ave, Elk Grove Village, IL 60007 | Preschool |
| Robert Frost Elementary School Preschool | 1308 S Cypress Dr, Mount Prospect, IL 60056 | Preschool |
| Rogers Park Children's Center | 1001 E Touhy Ave Ste 187, Des Plaines, IL 60018 | Center |
| Roy De Shane Elementary School Preschool | 475 Chippewa Trl, Carol Stream, IL 60188 | Preschool |
| Rupley Elementary School Preschool | 305 Oakton St, Elk Grove Village, IL 60007 | Preschool |
| Safari Childcare | 1630 W Algonquin Rd, Mount Prospect, IL 60056 | Preschool |
| Safari Childcare | 1736 E Kensington Rd # 38, Mount Prospect, IL 60056 | Preschool |
| Safari Childcare | 126 E Wing St Ste 336, Arlington Heights, IL 60005 | Center |
| Safari Childcare Incorporated | 1524 W Algonquin Rd, Palatine, IL 60067 | Center |
| Salem Methodist Preschool | 115 W Lincoln Ave, Barrington, IL 60010 | Preschool |
| Salem Plaza KinderCare - CLOSED | 1021 North Salem Dr., Schaumburg, IL 60194 | Preschool |
| Salt Creek Elementary School Preschool | 65 Jf Kennedy Blvd, Elk Grove Village, IL 60007 | Preschool |
| Schaumburg Christian School Preschool | 200 N Roselle Rd, Schaumburg, IL 60194 | Preschool |
| Schick's Crossing Preschool | 300 Schick Rd, Bartlett, IL 60103 | Preschool |
| Science and Arts Academy | 1825 Miner St, Des Plaines, IL 60016 | Preschool |
| Sears Child Development Center | 5334 Sears Pkwy, Hoffman Estates, IL 60192 | Preschool |
| Shepherds Flock | 800 W Oakton St, Arlington Heights, IL 60004 | Preschool |
| Simba Child Care Center | 176 W Irwing Park, Wood Dale, IL 60191 | Center |
| Small World Children's Center | 2316 Hassell Rd, Hoffman Estates, IL 60169 | Preschool |
| Sonshine Nursery School | 304 W Palatine Rd, Prospect Heights, IL 60070 | Center |
| South Elementary School Preschool | 1535 Everett Ave, Des Plaines, IL 60018 | Preschool |
| Spring Trail Elementary School Preschool | 1384 Spring Valley, Carol Stream, IL 60188 | Preschool |
| St Alphonsus Liguori Preschool | 411 N Wheeling Rd, Prospect Heights, IL 60070 | Preschool |
| St Anne Preschool | 319 Franklin St, Barrington, IL 60010 | Preschool |
| St Colette School Preschool | 3900 Pheasant Dr, Rolling Meadows, IL 60008 | Preschool |