• Pass the Maryland High School Assessment in English 10; AND
• Demonstrate Intermediate High proficiency in listening, speaking, reading, and writing in a language other than English, as measured by assessments that are aligned to ACTFL (The AmericanCouncil on the Teaching of Foreign Languages) proficiency guidelines.
From --
https://www.montgomeryschoolsmd.org/curriculum/languages/
This is a state thing, though, and that language is taken from the MSDE site/COMAR. Though that site refers one back to MCPS ("local World Languages office") for more info, I would contact the curricular specialist listed on the state page
https://marylandpublicschools.org/about/Pages/DCAA/World-Languages/index.aspx
to confirm the currency of the list of MSDE-approved assessments, which appears to be at:
https://marylandpublicschools.org/about/Documents/DCAA/World-Languages/Biliteracy/MSDE-Approved-World-Language-Assessments-for-Maryland-Seal-of-Biliteracy-A.pdf
After that, getting more detail about the qualifying exams, timing, how to set them up, etc., might best be had via an email to the MCPS World Languages office. Staff Directory:
https://ww2.montgomeryschoolsmd.org/directory/directory_Boxoffice.aspx?processlevel=s0100
Then circle back with your DC's WL dept & counseling office. Don't forget to come back here to post findings!