EHCP Educational Psychologist Assessment Advice

My daughter will be having an Educational Psychologist visit next week as part of her EHCP assessment and wondering if anyone could offer any advice on what to expect?

plus has anyone managed to get their EHCP on the anxiety/social issue side as my daughter is very bright so no problems educationally. Currently deciding between grammar or going for ASD specialist School as really not sure that she’ll cope in mainstream at all. Currently has a lot of interventions and wasn’t even going in before end of summer term!

thanks for your time