After 12th, you dont have as such any High Paying Government Job. You must first focus and complete your Graduation in your Relevant Field of Interest, followed by preparing for the following Government Examinations, aceing which will lead to a gateway to secure jobs with a strong salary and perks.

1. UPSC CSE

2. UPSC ESE (Engineering)

3. State PCS

4. SSC CGL

5. Railways RRB

6. RBI Grade B

7. SBI PO

8. IBPS PO

For more information regarding Government Jobs do follow the link below

https://competition.careers360.com/articles/government-jobs/amp