Consider retaking if:
* Your target schools are highly selective (T14 and top-ranked schools): The average LSAT score at these schools is significantly higher than 151. A higher score would dramatically improve your chances of admission.
* You believe you can significantly improve your score: Did you feel you performed below your potential on test day due to stress, illness, or inadequate preparation? If you believe you can realistically score 160+ with further study, retaking is worth considering. Review your score report carefully to identify areas for improvement.
* You have the time and resources: LSAT prep is time-consuming and expensive. Ensure you have the resources and commitment to dedicate to another prep cycle.
Consider not retaking if:
* You're happy with your chances at your target schools: A 151, combined with a 3.9 GPA, will still get you into many good law schools. Focus on your application's other aspects (personal essay, letters of recommendation, etc.).
* You're concerned about score regression: It's possible to score lower on a retake. The risk of lowering your score needs to be weighed against the potential for improvement.
* The cost and time investment outweigh the benefit: The resources spent on another attempt might be better used elsewhere in your application process.
In short: You haven't "blown it," but a higher LSAT score would significantly boost your application. Carefully weigh the potential benefits against the costs and risks of retaking before making a decision. Consider speaking with a pre-law advisor or law school admissions consultant to get personalized advice based on your specific goals and circumstances.