Some thoughts:
- what is the teacher/child ratio?
- is there a lot of teacher turnover?
- are parents welcome to stop by and volunteer?
- how many field trips are taken each year? What kind of trips are they?
- how much free outside time do they get? Really examine the playground area for safety features
- How much organized outdoor play is done? There should be a healthy mix of free and organized...
- how freely can children move from center to center?
- What kind of centers are stationary, and which rotate regularly?
- Ask to see their yearly lesson plans... look over the units they are covering. Make sure you are comfortable with them all
- Ask about group times - what do they do, how long does it last?
- Mealtimes and snack times. How are they carried out?
- Make sure art projects arent all the same thing... they shouldnt ever use coloring sheets, or copycat projects. Individuality should be key! A wide variety of mediums should be used, as well. This late in the year, they should be using several. Its common in the beginning of the year to limit mediums and work up to more as the children become more responsible.
- ask what their classroom rule list is...
- be aware of their discipline policy. make sure youre okay with it.
- ask about tv time or the sort... there should be very little to none
- ask about naptimes/rest times. THe children should never be forced to sleep, and after awhile of not sleeping, should be allowed to sit up and read a book or do a quiet activity
- depending upon age of children, computers should be introduced at some point in a casual way. And a very limited time frame
- do they hold regular teacher conferences?
To the outside eye, preschool classrooms should look like chaos =) But a careful eye will see that it is organized chaos... children should have many centers to choose from at a time, and should be given the opportunity to choose what they want. Group times should be fairly short and packed full of fun stuff. The teacher should be visible at all times, and have everything under control... Watch to see how the children relate to her, and how she relates to them. Watch for mutual respect. See how the chaos affects her... she should be at ease and comfortable in the environment.
Good luck! finding a good preschool is a HARD thing to do =)