The Research Shows:

“By fifth grade, most students are rated as fluent in the second language.”

“Findings present evidence that higher levels of bilingual proficiency are associated with higher levels of academic achievement in both English and Spanish.”

“Evaluation results demonstrate that two-way immersion students meet and exceed the goals of the program: bilingual proficiency–fluency in their first and second language; biliteracy–scores at or above grade level in reading achievement in both languages; and performance at or above grade level in mathematics, social studies, and science.”

Quoted from: Two-Way Immersion Programs: A First-Rate Education by Kathryn J. Lindholm, Ph.D., Associate Professor & Evaluator, San Jose State University

compare Thomas and Collier, The Multiple Benefits of Dual Language:

see also

What Parents Want to Know about Foreign Language Immersion Programs


” … learning a second language at an early age has a positive effect on intellectual growth and leaves students with more flexibility in thinking, greater sensitivity to language, and improved listening skills.”

According to Professor Jim Cummins of the Ontario Institute for Studies in Education of the University of Toronto:

“For immersion education to attain its maximum potential … Students must have opportunities to communicate powerfully in the target language … This is a challenge that educators are only beginning to address in immersion and bilingual programs around the world but it is in these programs that there is the most potential for truly preparing citizens who can make highly significant contributions to their own and our global societies. For this to happen, however, immersion educators must explicitly locate their pedagogy and educational vision in the realm of global education and ensure that language policies operating in the school are consistent with this philosophy of global education.”

” … the real gifts of immersion education reach far beyond academic success. Immersion education develops the kind of global graduate we need in our changing world. The immediate success is obvious; the long-lasting effects are forever.”

– Mellgren and Somers, Graduates of a Language Immersion Program: What Are They Doing Now?