The state Department of Public Safety says the Trinity Independent School District van was struck Thursday morning about 75 miles north of Houston.
Trinity County Sheriff Woody Wallace says a 7-year-old girl who was riding the van died at the hospital.
A spokeswoman for East Texas Medical Center in Trinity says 10 injured students from the van and the truck, as well as the driver of van, were in fair condition.
Wallace says three students were in the pickup, including a 17-year-old driver. Authorities think the sun may have blinded the driver as the vehicle came over a hill.
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