A Lutheran school for families of all religious backgrounds, Trinity is located in Litchfield Park, Arizona. Trinity is co-educational and organized into three divisions – Foundations (Preschool through Kindergarten), Primary School (Grades 1 - 4), and High School Prep (Grades 5 - 8). Trinity faculty equip students with the ability to think critically, solve problems creatively, communicate effectively and act with confidence. Trinity, New Thinking.