/tags/principal-louis-washington Principal Louis Washington en-US Copyright Mon, 15 Dec 2014 18:40:57 GMT /education/2014-12-15/at-this-fort-worth-high-school-classes-last-90-minutes Block schedule classes run like the multi-hour science labs you might recall from high school or college. Some schools use them. Many don’t. As part of… Mon, 15 Dec 2014 18:40:57 GMT /education/2014-12-15/at-this-fort-worth-high-school-classes-last-90-minutes Bill Zeeble