Under the new system, instructors will have to be certified to teach Japanese at language schools. The report does not say when the new system will be introduced. The number of Japanese-language schools has been increasing rapidly, along with the foreign student population, but critics have pointed out variations in teacher quality. The education ministry also plans to create a system to certify language schools by evaluating their curriculums. The government will scrutinize Japanese-language education more closely to improve its quality, but coming up with effective accreditation standards will be a challenge. To obtain a license as a "registered teacher of Japanese," an instructor will, in principle, have to pass both basic and advanced written examinations, then undergo practical teacher training.