i teach part time at the community college and DH works a typical 9-5. we hs, lean towards US. Right now i teach two nights a week. I am hoping that in two years I can get a full time position. that will mean that i will work 2-3 half days and two nights. but, i only teach 9 months out of the year. So we "school" year round. If all goes as planned, we will hire a babysitter for the half days.
I don't know how we could swing it if we both worked 9-5 jobs. babysitting would eat so much of the income.
I think you can definitely do it the year you are in grad school.