Which of the following settings is defined as a separate classroom?

The setting defined as a separate classroom is characterized by students spending less than 40% of their time inside a regular classroom. This classification emphasizes that the majority of the educational experience for students in this setting occurs in a specialized environment, tailored to meet their unique learning needs. Such placements are often made for students with significant disabilities, requiring specialized instruction and support that cannot be adequately provided in a less restrictive environment.

In contrast, the other options illustrate varying levels of integration within the general education classroom, indicating that students in these arrangements have more interaction with their typically developing peers. The separation reflected in the chosen setting allows for individualized attention and specialized teaching methods that can significantly benefit students with specific educational challenges.