<prompt> Human: Hello! Long time lurker, first time posterI graduated college in December with 22000 in student loans. I have an 8-year plan to pay them off determined and implemented through the twin beauties of Simples goals system and unbury.us, as well as a 5 year plan to develop a 20,000 nest egg should something go terribly, terribly wrong.I was lucky, and got a Real Job right as I graduated with benefits and tuition reduction and a 68 increase in wage over my previous job. Due to the sweet tuition benefit, Im planning on re-enrolling part time for my masters, thereby going into deferment on my loans and pausing the interest on my subsided federal loans - to the tune of like 200 out of pocket per year.My credit score is okay, 700-710 depending on who you ask. According to Credit Karma and my bank - the things that are hurting me are a low age of credit history and a small total number of accounts.With all of this said, I am anticipating a pretty fat check from my tax return, which will be enough to cover one of my student loans which has both the lowest principle and the highest interest rate. However, its also one of my older loans. If I have the goal of making my credit score better, should I pay off that loan lowering my number of accounts and age of credit history or spread it among all of my loans meaning Ill still have the one hanging over me?td;dr - have ability to eliminate one of my student loans entirely, but am worried itll negatively impact my credit score, as Im already doing not-so-hot in the number of accounts and age of history things.  <response>: Why do you care about your credit score in the short term? Dont pay interest to improve your score. 