Understanding OPT, CPT and STEM Extension

29/04/2026

The H-1B visa filing process begins when an employer submits Form I-129 to USCIS, including job details, salary information through the Labor Condition Application (LCA), and the candidate’s qualifications. USCIS reviews the petition and may issue a Request for Evidence (RFE) if additional documentation is required. Once approved, the H-1B visa typically becomes effective on October 1. For international students, Optional Practical Training (OPT) provides an opportunity to work in the U.S. after graduation. It includes pre-completion OPT, post-completion OPT, and a 24-month STEM extension, allowing students to work for 12 months (regular OPT) or up to 36 months for STEM fields. 

Curricular Practical Training (CPT) allows students to gain work experience while still studying, as long as the employment is part of their academic program and approved by the university’s Designated School Official (DSO). CPT can be either part-time (20 hours or less per week) or full-time (more than 20 hours per week). However, students must be cautious—12 months of full-time CPT makes them ineligible for OPT. In contrast, premium processing is a USCIS service that speeds up application decisions (typically within 15 days) for an additional fee, making it valuable when timing is critical. 

Premium processing is widely used for H-1B petitions, especially when employers need faster approvals for job start dates, RFE responses, or H-1B transfers. It is also available for OPT and STEM OPT applications (Form I-765), particularly when delays could affect employment opportunities. However, premium processing does not apply to CPT, since CPT is authorized by the university rather than USCIS. Students transitioning from F-1 to H-1B can benefit from the Cap-Gap extension, which allows them to remain and work legally in the U.S. until their H-1B status begins. To avoid complications, students should carefully track deadlines, avoid unauthorized work, limit excessive CPT usage, and stay aware of visa and OPT expiration dates. 

Explore more on: 

Chapter 5 – Practical Training | USCIS 

Students and the Form I-20 | Study in the States 

practical-training-opt-and-f-1-status-for-eligible-students 

Other post

Adjustment of Status Faces Higher Scrutiny

AOS is discretionary, not a substitute for standard immigrant visa processing

09/06/2026

USCIS Denials for Signature Errors

From July 10, 2026, USCIS may reject or deny filings with signature defects

02/06/2026

Understanding EB-2 National Interest Waiver

USCIS outlines EB-2 NIW eligibility under Matter of Dhanasar

26/05/2026