Hey!
I was in your shoes last year. I applied to School Psych MA/Ed.S. programs and was terrified that my Quant scores would be a deterrent on my applications. I only took the GRE 1 time and got Q: 148, V: 157 AW:4.5. Honestly, I was worrying too much. School psych programs generally have less applicants than say, a clinical psych program, so they really look at your whole application (at least with my school). You sound like a well-rounded student with background experience/demonstrated interest in the field, so as long as you ace the interview you should be fine!
See if any school websites list their average credentials for previous applicants. For my top school (which I got into), the average GRE score for MA students was a 303, which calmed my worries a lot. Good luck!