We recommend our UIL Math products for North South Foundation math study. Note that Texas UIL also has a Number Sense contest and these products are included in our math contest recommendations.
What is Texas UIL? The University Interscholastic League exists to provide educational extracurricular academic, athletic, and music contests. The UIL was created by The University of Texas at Austin in 1910 and has grown into the largest inter-school organization of its kind in the world.