Brenda Amparan leads her first graders in Spanish at Pueblo Elementary School in Scottsdale, Ariz., on Sept. 16, 2025.

But the biggest gains in test scores, especially in math, were visible when Hispanic English learners were paired with Hispanic teachers who had a bilingual language certification. This certification ...

WASHINGTON, March 11 (Reuters) - While most people speak only one language or perhaps two, some are proficient in many. These people are called polyglots. And they are helping to provide insight into ...