I teach half day 4s/half day 3s. LOVE working with the 4-year-olds. The 3's just drive me absolutely nuts. They come in at lunch, they never eat anything and it's pulling teeth to get them to try something new. Some are still in there say-no-to-everything toddler phase, and some still have screaming kicking spitting temper tantrums regularly. They are very loud and just naturally want to run all the time, so the 1.5 hours of playtime just causes my stress level to go up and up, and I just find it mind numbing. The afternoons really drag.