1. If they are non-profit and use a curriculum including scope and sequence of courses, and formal review and documentation of student progress - they'd be considered a private school (ISP) student
2. If they are non-profit but do not use a curriculum (including scope and sequence of courses, and formal review and documentation of student progress) - they'd be considered an IEP 'at-home' preschool student
3. If they are for profit-- full stop, not a private school - they'd be considered an IEP 'at-home' preschool student
Yes, but make sure you are asking the full question, not just about curriculum. You need to ask whether the child is in a non-profit private school/daycare or homeschool program that:
Uses a structured curriculum with a scope and sequence of courses, and
Has a formal process for reviewing and documenting student progress.
If all of these conditions are met, then the student is considered a private school student, and you would complete a google form entry for them.