Piedmont Hills Montessori Academy in San Jose and Adventure Montessori Academy Union City have been serving our community’s early childhood education needs for over thirty years. Our diverse preschool and kindergarten programs ensure that your child will have a strong academic footing during his or her journey to adulthood. The Montessori preschool curriculum is a tried and proven a way to ensure that your child not only maximizes his or her learning potential but has fun while doing so.