I remember being in 6th grade in Home Economics (or something) and the teacher had us watching this science fiction show similar to Doctor Who where this team of people who where (orange?) jumpsuits go back in time and solve issues. At least that is what I can remember of that show. It was pretty corny.
This might be Seven Days, which aired from 1998-2001. In this TV show they had a technology to travel 7 days back in time and used it to solve problems, and the time traveller wore an orange suit.
I also remember this show when I was in 6th. I don't know if they went back in time or into the future but it seemed like after some sort of apocalypse. They all wore orange jumpsuits and they were in the library figuring out the Dewey Decimal System, and also figuring out what words meant. There were other people outside but they didn't speak; they were dirty and they seemed really stupid. I've been trying to find the show myself on the Internet. I watched in language arts I believe. Somewhere between 1991 and 1993 is when I saw it.