The passage you provided is well-written and free of spelling mistakes. It effectively highlights the impressive performance of students in the Bihar Board 12th class exams. Here's a slightly rephrased version for conciseness:

Bihar Board Celebrates Best-Ever Results

The Bihar School Examination Board (BSEB) announced outstanding results for the 12th class exams this year. With an overall pass percentage of 87.21%, it marks the board's highest achievement ever, surpassing last year's 83.7%.

Girls excelled in the exams, boasting a pass percentage of 88.84% compared to boys at 85.69%. This achievement signifies progress in narrowing the gender gap and highlights girls' educational advancements.

The science stream secured the highest success rate, followed by commerce and arts. Students can now pursue further studies and career paths based on their results.

The credit for this remarkable performance goes to the unwavering dedication of teachers, students, and parents. The expectation is for this trend to continue, leading to even better results for the Bihar Board in the future.