Their biggest concern is a requirement known as English as a Medium of Instruction, or EMI, that requires students to take some subjects in English, which they say could actually hinder their understanding of the topics.

Earlier this week, the Ministry of Education announced improvements to the bilingual policy, promising to offer more opportunities to speak English outside of the classroom, and promoting new technologies to assist with language learning.

It also adjusted lessons so only English-language classes would be taught in English.

But this change only applies to primary and secondary schools, not in higher education.

Some students still have concerns about the policy.

The policy aims to make Taiwan into a bilingual nation by 2030, to make the country's talent more competitive and attract international companies to Taiwan.

The educators here say that that's made English-language education in Taiwan more competitive, adding pressure on students, parents and educators to spend time and money on a language that's still not widely used in the country today.

Yixin Chen and Tiffany Wong in Taipei for Taiwan Plus.