Are you referring to elementary school? 1.5 hours for reading?Our school day is 6.5 hours. They have one hour for lunch/recess and 45 minutes for a special. If you add PE everyday including the other special, that's 2.5 hours of time not in the classroom. You need 1.5 hours for reading, 1 hour for math, 1 hour for science & social studies and at least 45 min. for writing.
But wait! There's more!
Then you have to take into account the kids that leave class for special services like special ed, speech, occupational therapy, Title One, other therapy, etc. During that time many schools have a time when the teacher's job is to focus on certain aspects of subjects that need to be retaught. For instance, you might have a group of kids that still don't understand fractions. That's the time the teacher would take them aside and help them while the other kids are working on other things. At my school we're also required to do character education for 30 minutes once a week. Oh! How could I forget.... then there's the constant, on-going assessments of each individual child in reading, math and writing. These tests take FOR-E-VER to administer since it has to be done individually. And this is done every 7 days.
Then you have the bathroom breaks, milk breaks, another recess (in some cases), special assemblies, intercom interruptions, etc. etc. etc.
Many teachers I know barely have time to fit everything in everyday as it is. There HAS to be parent involvement in helping kids with non-academic areas. Schools cannot and should not do everything.