Originally Posted by TuffToodle
unfortunately I have already gotten the impression from the school that they would like this meeting to be one and done
Please deal only in facts. An "impression" is an interpretation and/or an opinion.

Facts would be: WHO said WHAT, WHEN/WHERE?
Example: Written invitation dated Jan xx, 2017 said "... to finalize child's plan for academic year 2017-2018 during meeting scheduled Feb xx 2017, 9:00 a.m. - 9:20 a.m.)
Reference - School policy XXX.yyy, State statute xyz.12"


Research:
- Is there a State law which states the plan needs to be accomplished in one meeting?
- Is there a School policy which states the plan needs to be accomplished in one meeting?

It is more likely that your child's needs will be identified well (mutual agreement between parents and school as to what the needs are) and will be well-served if you take this slowly, seek facts, create dated documentation. For example: laws change, policies change, websites change... your created/collected/organized documentation at home will not change.