The cutoff score for the BPSC CDPO (Child Development Project Officer) exam varies each year and is determined by the Bihar Public Service Commission (BPSC) based on various factors. The cutoff score is the minimum marks required by candidates to qualify for the next stage of the selection process. It is important to note that the cutoff score is different for different categories such as General, OBC, SC, ST, etc.

Factors influencing the cutoff score:
1. Number of vacancies: The number of available vacancies plays a crucial role in determining the cutoff score. If the number of vacancies is high, the cutoff score may be relatively lower as compared to a scenario with fewer vacancies.

2. Difficulty level of the exam: The difficulty level of the CDPO exam also impacts the cutoff score. If the exam is relatively more challenging, the cutoff score may be higher as it indicates a higher level of competence required to qualify.

3. Number of candidates: The total number of candidates appearing for the exam also influences the cutoff score. If there are a large number of candidates, the competition is higher, and the cutoff score may be set at a higher level.

4. Reservation policy: The reservation policy of the BPSC also affects the cutoff score. Different categories have different cutoff scores based on their respective reservation quotas.

5. Previous year cutoff trends: The cutoff score for the current year's CDPO exam can also be influenced by the previous year's cutoff trends. If there is a significant increase or decrease in the performance of candidates in comparison to the previous year, it may impact the cutoff score.

6. Normalization process: In case the exam is conducted in multiple shifts or sessions, the BPSC may use a normalization process to ensure fairness in evaluating the candidates' performance. This process takes into account the variations in difficulty level across different shifts.

Conclusion:
The cutoff score for the BPSC CDPO exam is determined by considering various factors such as the number of vacancies, difficulty level of the exam, number of candidates, reservation policy, previous year cutoff trends, and the normalization process (if applicable). To know the specific cutoff score for a particular year, candidates should refer to the official notification or the BPSC website.