This project does not look at the efficacy of mother tongue instruction. It looks at the current system of instruction and probes the linkages in performance between subjects.
Mother tongue education is the idea that a learner is taught the fundamental concepts of a topic in their first language. Once they learn these concepts they can theoretically reapply them to an English curriculum. The idea being that children absorb concepts easily in their own familiar languages and can gain a fundamental understanding of them. But in a second language they simply become words that are learnt, but not absorbed.