COVID-19 Update: We are proud to have provided a safe space for learning throughout the COVID-19 pandemic. As many states begin lifting COVID-19 restrictions, we want to be clear that TRMA will not be eliminating any safety measures. Protecting the health and safety of our students, staff, and their families remains a top priority. We’ll continue monitoring guidance from the CDC as well as Illinois Department of Health. Click HERE to learn more about the measures we’ve taken. COVID 19 SURCHARGE.

TREP High School Intern Program

High School internships are an employment decision between the employer and the student applicant.  The employers will select the applicants to interview, and decide whom to hire.

Please note that some require the applicant to be 18 years old.

Administrative Assistant

(must be 18)

Reichold, Morris, IL

B Laborer

(must be 18)

Manhattan Mechanical Services LLC, Manhattan, IL

Engineering Data Management

(must be 18)

Bunge Loders Croklaan, Channahon, IL

Engineering Risk Mitigation

(must be 18 with high school diploma)

INEOS Styrolution America LLC, Channahon, IL


Three Rivers Manufacturers’ Association (TRMA), Joliet, IL



(must have HS diploma)

Nanophase Technologies Corporation, Romeoville, IL

Social Media (Marketing)

PDM Plumbing, Heating & Cooling Since 1885, Joliet, IL

Training Department

LyondellBasell, Morris, IL


* Additional internships will be posted as available.

Click for the application


Completed applications must be returned by
April 15th

Items needed to complete application:

  • Contact information
  • Resume (PDF)
  • Letter of recommendation (PDF)
  • Letter of interest (cover letter) (PDF)
  • Current Transcript (PDF)
  • GPA
  • Class ranking
  • School champion contact information
  • Work history (if applicable)
  • CTE/Application courses taken to demonstrate skills required (if applicable)
  • Work history contact information (if applicable)

The program is by invitation only — you must have a school “champion” to apply.