Introduction:
The SSC CHSL (Staff Selection Commission Combined Higher Secondary Level) Exam is conducted in three tiers - Tier I, Tier II, and Tier III. Each tier has its own purpose and different types of questions. The cutoff for the exam can be different for different tiers due to various factors.

Tier I Cutoff:
- Tier I is a computer-based examination that consists of multiple-choice questions.
- The cutoff for Tier I is determined by considering various factors such as the number of vacancies, the difficulty level of the exam, and the performance of the candidates.
- The cutoff is generally higher for Tier I as it acts as a screening test to filter out a large number of candidates for the subsequent tiers.
- The cutoff is calculated based on the normalization process to ensure fairness and equal opportunity for all candidates.

Tier II Cutoff:
- Tier II is a descriptive paper where candidates have to write an essay, letter/application, or précis.
- The cutoff for Tier II is generally lower than Tier I as the evaluation process is subjective and depends on the quality of the content written by the candidates.
- The cutoff is determined based on the average performance of the candidates and the number of vacancies available.
- The difficulty level of the topics given in Tier II also plays a role in determining the cutoff.

Tier III Cutoff:
- Tier III is a skill/typing test which is qualifying in nature.
- The cutoff for Tier III is not applicable in terms of marks or scores as it is only required to qualify the test.
- Candidates need to meet the minimum prescribed criteria in order to be eligible for final selection.
- The cutoff for Tier III is generally set based on the predefined criteria such as minimum speed and accuracy required in typing or skill test.

Overall Cutoff:
- The overall cutoff for the SSC CHSL Exam is determined by considering the performance of the candidates in all three tiers.
- The candidates who meet the overall cutoff are considered for the final selection process.
- The final cutoff is determined based on the number of vacancies available and the performance of the candidates in all three tiers.

Conclusion:
In conclusion, the cutoff for the SSC CHSL Exam can be different for different tiers. The cutoff for Tier I is generally higher due to the screening nature of the exam, while the cutoff for Tier II is lower as it is a subjective paper. The cutoff for Tier III is not based on marks or scores but on qualifying criteria. The overall cutoff is determined by considering the performance of the candidates in all three tiers and the number of vacancies available.