I was in a similar position, 2 kids, partner wanted to go to uni for nursing, from what I remember it was a years access course and a 3 year uni course.
She didn't drive which was a killer too!
First year wasnt too bad as she could skip the odd class and timetable wasn't too bad so I just worked around that.
Uni was tough, never looked at it this way till I wrote this, maybe it played a big part in the relationship ending,i dunno?
I was up at 5 to run her to placements, back, kids up and that, one to school then other to childcare then into work, leave at 3, pick up kids, pick up partner, was tough.
I was resentful of her to be honest, seemed I was doing all the work and making all the sacrifices, caused a lot of arguments, some justified, some me being stressed and exhausted.
Tough decisions!
In my experience, no effing way would i do it again, id tell her to do the nursing when she had saved enough and the kids settled in school etc.
Then again I'm bitter, she effed off with someone see met through uni, week before the graduation! I didn't even get to go, first time in 12 years a decent joint income.
She took all the money from house, I was left with 40k which was pissed away in no time, 2007 crash, couldn't earn a penny.
I kept the kids which was great for a year, then she took them out of school one day and f**k*d off 200mile away.
Anyways, these decisions you make count!
Be honest about how you feel about it
In my case best thing ever happened bar the kids being so far away. Didn't always seem that way