Research consistently finds a 2x performance increase over standard methods.
Reading material that interests you engages you at a level that standard instruction can’t match. It’s during this flow-state that acquisition of new vocabulary is heightened.
Research into the comprehensible input model of acquisition shows students move forward up to 15 months in ability compared to just 6 months of standard instruction groups in one academic year.
Students that read interest-based stories perform better on tests of grammar than students who explicitly study grammar.