Do they have visiting SALTs and do they run any sort of SULP programme during tutorial time
What type of asd training do the school routinely offer staff have as part of their CDP
Is there a buddy/mentoring system whereby new pupils are matched with Y11s or 6th formers
Are the tutor groups vertical or horizontal (ie will your ds be mixing with all years or just one?)
Do you have 1:1 support sessions during lunchtimes?
How many pupils are there approx to one TA/LSA, do all the supported students work together in a small group or is the support more discreet and the LSA works their way round the class
If your ds has a statement then I would be asking if the LSA support would be in class or out of class
What are the current arrangements re transition - would there be an opportunity to come in before the taster day to meet the teacher
How does the dinner hall work (depends on how your ds copes with noise and queuing)
Do the packed lunch people sit somewhere different - That wouldn't help any socialising
Could the senco send the timetable before the first day or at least a temporary timetable to set out what will be happening on the first day
Can the senco send you a list of the teachers (with photos if poss) your ds is going to have
there are some other questions here and the autism education trust has a transition transition toolkit you may find useful