Stevenson High School officials have ended a much-publicized investigation into illegal drug sales on the Lincolnshire campus, a spokesman announced Friday.
Unspecified disciplinary action has been taken against those students found to be involved with drug sales or purchases, school spokesman Jim Conrey said.
"Our top priority is making a safe learning environment for our students," Conrey said. "And we're not going to tolerate any behavior that disrupts that atmosphere."
Some of those students may face additional consequences relating to their participation in extracurricular activities, he said.
As is the case at many schools, students participating in extracurricular activities such as clubs or athletics face stricter behavioral rules at Stevenson than students who are not involved in such activities.
No students have been expelled because of the investigation, and no expulsion hearings are planned, Conrey said.
He again declined to say how many students have been punished, citing the need to protect student confidentiality.
Conrey's announcement came about a week after Lincolnshire police announced they had ended their investigation into the matter.
Two students have been charged in juvenile court in connection with the investigation, which began in December and focused on more than 1,000 text messages students sent to each other. Police and school officials worked together on the case.
Less than 10 grams of marijuana was recovered from one student during the investigation, Lincolnshire police have said.