"credits earned" is correct and usable in written English.
It is typically used in a context related to education, such as a university or educational program, or when referring to a course that awards some sort of credit or reward. For example: "He earned 12 credits in his first semester of college."
The reports put heavy weight on progress that schools make on measures like graduation rates, state tests and credits earned by students, rather than only measuring absolute performance.
At the end of the commercial, the following words flashed on the screen, in small type and for only a few seconds: "Credits earned are unlikely to transfer".
The measure would stop New York companies from keeping money they make by selling pollution credits, earned by cleaning their own smokestacks, to major polluters elsewhere.
Utilities and energy companies applauded, particularly because the power plant cleanup would allow trading of credits earned by companies that find ways to go beyond requirements.
The talks also clarified the design of the first global system for buying and selling credits earned by reducing carbon dioxide emissions.
And, according to some teachers at the school, even the more tangible factors in the score — graduation rates and credits earned by students — were not to be taken at face value.
And a system of averaging, banking and trading credits will let makers conserve any extra credits earned in one year and apply them to other years if they need to.
The school, which has about 500 students from grades 6 through 12, achieved a nearly perfect score in the category of "student progress," based partly on course credits earned by students.
The company proposes to use "emission credits" earned by shutting down Boiler 100 to gain permission to reopen the unit, a maneuver that environmental groups and some legislators say defies the rules governing such credits.
For energy companies willing to accept some limits on warming gases, one goal is to firm up a market for tradeable credits earned by companies that make sharp cuts in emissions or plant or protect forests, which absorb carbon dioxide.
The measure would stop New York companies from keeping the money they make by selling pollution credits, earned by cleaning their own smokestacks, to major polluters in the Midwest and the South.
