Parent question re:504

Son has new teacher for Science. 504 stipulates he gets 150% extra time for assessments. Son was denied the time by new teacher because "he was distracted during test and looking around room not at the paper." When pressed new teacher says the test should take 30mins and she gave everyone 45 mins so son already got his time and a half. I'm not so sure that follows ocr guidelines and I'm ready to call her on this. Thoughts? (This may be a double post as I wasn’t sure where the first one went!)

*UPDATE - teacher feels student wasted time and was not going to give extra time bc of that. Also feels that it is an unfair advantage to let student see the entire test and finish it later at testing center. She will give first half during class and the other half at the testing center. This seems like a good compromise.