The phrase "administered collectively" is correct and usable in written English.
It can be used in contexts where actions or responsibilities are shared among a group or organization.
Example: "The resources were administered collectively to ensure equitable distribution among all members."
Alternatives: "managed together" or "governed as a group".
The six small islands of the Tristan da Cunha group are administered collectively.
The park and the two recreation areas are administered collectively by the U.S. National Park Service (NPS) as the North Cascades National Park Service Complex (also called the North Cascades National Park Complex).
Tests were administered collectively, in the classroom, by trained psychologists.
Questionnaires were administered collectively in classrooms, in the exclusive presence of the researcher.
What the news divisions were aware of all afternoon at these networks -- as well as at newspapers -- was that the first results of the exit surveys conducted by a collectively administered polling organization were showing Mr. McCain was leading by a large margin, the Democrats were locked in a close race and Mr. Bush was facing a big loss.
The instruments were collectively administered in classrooms in a single session for each class, taking 40 min on average for completion.
Ultimately, we achieved a set of surveys that collectively administered nearly 600 questions while maintaining high response, completion, and retention rates.
The instruments were administered both individually and collectively in the places where subjects were recruited (churches, spiritual centres, classrooms etc).
Intellectual performance tests were administered individually in grades 1 through 3 and collectively, in groups of eight children, from grade 4 onwards.
The test was administered individually to students in grades 1 through 3 and collectively, in the classroom, in grade 4 onwards.
Collectively, this study showed that a high purity GOS, administered in a confection product at doses of 5 g or higher, was bifidogenic, while a dose of 2.5 g showed no significant effect.
