tarek ibn ziyad academy (tiza) was an elementary school (k-8) in inver grove heights, minnesota named after tarek ibn ziyad, the muslim general of medieval algeria who entered gibraltar in 711 ce on behalf of the umayyad caliphate and defeated the visigoths. the school is sponsored by islamic relief usa. the school has a primarily muslim student body and has been embroiled in a number of controversies regarding the separation of church and state. the school has a waiting list of 1,500 students. around 80% of students are english language learners. despite this, the school has one of the highest reading scores on standardized tests in the state. as of july 2011 tiza has been shut down by order of the minnesota education department, due to lack of an approved charter school sponsor.