Welcome to Yellow Door - Preschoolers

The Child Development Lab (CDL) Preschool Full-Day Program:

  • Enrolls 20 children, ages two and a half to five years
  • Open 7:30am to 5:30pm
  • Open 12 months a year
  • Closed approximately 20 days for holidays and spring break
  • Closed 5 days for professional development in August
  • Classroom Phone: (573) 882-3883; Please call (573) 882-4318 for enrollment information


Enrollment is open to children in the community age 2½ to 5 years with the goal to have a well-rounded, diverse group of children representative of the population of Columbia. The CDL reserves the right to enroll children based on sex, race, ethnicity, special needs and low-income for the purposes of high quality teacher training. The program is designed as a full-day, 10-hour child care program and serves the purposes of full-time employed parents best.


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