The SiL English Subject Test is designed by graduates of the University of Oxford and aligns with the British National Curriculum. While the exact history of the test isn't specified, here's what we know about the test itself:

Test Structure: The test assesses key language skills in Reading, Grammar, and Vocabulary through 24-30 multiple-choice questions, divided into:

Reading  - Evaluates comprehension skills, including inference and critical thinking.

Grammar - Assesses sentence structure, syntax, and accurate use of language.

Vocabulary - Tests word knowledge, contextual usage, and precise expression.

The Contest contents are covered in the English Curriculum.

Use of mobile phone or any other electronic device is not permitted.

The Contest questions for each level are divided into three parts. Each question in first, second and third part is worth 3 points, 4 points and 5 points respectively.

There is a penalty of one point for each incorrect answer. If the question is left unanswered, it is worth 0 points. To avoid negative scores, each student begins with a credit of 24 to 30 points. Hence, the minimum score attainable is 0 points.

The CLS determines and coordinates the participation of the Pakistani students in the International Round.

Each year, several International Summer Camps are organized for national winners of the Contest. The locations, dates, duration, age of participants and availability vary from year to year.