The phrase "open for registration" is correct and can be used in written English.
For example, you could say "The new class is open for registration now!".
The programs will open for registration in November of 2018.
List all schools/departments to which an individual course is open for registration.
The course launched in early September, but is still open for registration through November!
Please note that once we run out of seats at a specific tier, the subsequent tier will open for registration.
MOOCs are also typically free, with some Berkeley courses open for registration for up to 100,000 students.
The courses listed below are open for registration via SSOL to non-SIPA students for Spring 2019.
The first of these could open for registrations as early as this fall.
Note: Weebly is open for registrations but they are limiting the total number of new users.
This two-course program opened for registration after Thanksgiving.
The free courses are opened for registration via edX on Nov. 18 and will begin in early February ,2015.
The challenge, announced via various media including targeted emails, mailing lists and the ISBI 2013 Web site, was opened for registration through the challenge Web site.
