I do all the school admin for 2 DC - reading the daily messages on the app, newsletters, checking school bags etc. My ex does zero school admin. We both work full-time. I have been doing this for 11 years and have asked him many times and in many different ways to contribute to this. I end up reminding him to do things so DC don't miss out.
We co-parent and have DC an equal number of nights.
ABIU to ask him to contribute something else, given he's apparently incapable of checking the messages? I'm thinking about asking him to look after DC when I am away (maybe 4 or 5 weekends per year) and then not asking for nights to 'make up for' me not having them.