Nice!
I feel like there’s too much to look at… like there’s too many elements on the flyer. I would suggest using one type of “frame” (I like best the Sunday or Friday one) and only using that for all the days. Maybe use a decorative font (your whole ad is only using sans serif) as the titles like by “learning Opportunities” and all the days of the week
I also think it’s not childish looking, but it doesn’t look 100% chashuv… maybe add some maroon or something like a rich red - and take out the light blue…
Good Luck!!