For the last month I've managed an intern in my department. This year will be my 3rd year managing an intern, however my last two years were with the same intern. My first intern was very good at not only work, but professional aspects of the job. He asked questions whenever he felt lost, and tried to work towards independence by trying to mirror the way I try to work. He was attentive, asked focused questions, and he was very independent.
Fast forward to this year, I have an intern who is almost exactly the opposite. Professionally, he's somewhat behind which is likely because he worked in retail for 10 years (He's older than me by around 8 years). I don't mind this as it's part of the training process, but he doesn't try to learn. He's very good at showing he's interested in this profession, as any career changer should be, but when it comes to actual work his work product is completely unsatisfactory. He sends me work as final with errors that anyone would catch within 10 seconds of looking at the spreadsheet (egregious typos, charts with #N/A's everywhere, etc.). I think the most frustrating thing though is that even a month in, he puts no effort into independently working through a solution. I spend almost 3 hours on average daily helping with his work, because he calls me randomly during each step of a process. If I don't engage, he puts in absolutely no effort to move forward and will passive aggressively complain that I wasn't able to help him the previous day. While our company and even myself encourage asking questions, I feel like he's taking extreme advantage of this by asking questions on every small topic that he could atleast try to put effort to think through himself (and reach a similar conclusion).
The main issue here is our department is very short-staffed right now and we're hiring for two positions. Our intern is obviously aware of this, and with the fact that he's a career changer he's been pressing me about this every week (The second day of his internship he asked me what I thought and if he could be hired for a full time position, the answer was obviously no.).
I'm wondering what the best way to spell all this out to my boss would be in the most professional tone/wording possible. I do have a (strong) personal opinion on the matter, but I'd like to be objective in how I phrase everything.
Unfortunately for myself, in my weekly meetings with my manager, I've tried to be nice about him and said he's helping out to the best of his ability and he shows drive (which is partially true, but showing and acting are different) because it's hard to judge someone on 1-2 weeks, but now that it's a month in, things are really much more stressful for me.
Almost half my day is spent teaching an intern things I've already told him many times before. I took a day off too as I wasn't feeling well, and told him to reach out to my cell if anything urgent came up and he reaches out to me for something that was extremely minor (as in, whatever decision wouldn't have even affected the final product if he thought 1 step further). It's just really annoying not being able to find time to do my own work because someone is grossly incompetent and not willing to learn. I would highly appreciate any advice on this.