Although these were indeed her students in high school all of them were past the age of 18, and many well into their 20's.
*
Some years ago we had an opportunity to live and work in a Caribbean country for one year. During this time we both worked in a high school, but Sam's English class was by far the most popular class in the school. Many of the students were eager to learn the language well, so she offered an after hours tutoring class in our home to some of the more advanced students. It just so happened that this group was made up entirely of boys, by boys I mean from 18-25 years old.
Although she had to wear formal clothes for teaching her classes as soon as she got home she got more casual and often changed into a tank top and shorts. I happened to come home early one day, during the middle of one of these home study sessions, and sat in the living room with the students. Sam was busy helping each of the students with their questions and would often come over to one of them to see which words they were giving them trouble. When she leaned over to check one of the students papers I was treated to a complete view of her bra clad titties.
She isn't very busty, a 32 A/B so when she bends over her shirt falls far enough away that anyone could see both breasts clearly, in fact you could look all the way down to her navel! I was surprised that she was showing so much, and wondered if this was what made her class so popular! I enjoyed watching for the next half hour or so as she bent over to help the students, or refill their water glasses, and her shirt would fall open to expose her little tits. Without exception they all tried to look down her shirt without her catching them. I enjoyed the show she was putting on, and especially the reaction she was causing.
After the students left I told her that she was being quite an exhibitionist for her students. She asked what I meant by that, and I took her into the bedroom and had her bend over in front of the mirror. She gasped at the sight of her chest being so clearly exposed and stood up quickly. She was blushing and didn't seem to know what to say. I think she knew all along that she was showing off, but hadn't realized how much. This was also one of the loosest tops that she wore.
Since she seemed speechless I suggested that it was too bad she was wearing a padded bra, like she always wears, that didn't reveal very much. It would have been a much better show if she'd have been wearing one of her sheer "dress up" bras, or to even go braless would be better.
Nothing much seemed to change the next weeks, and even though she knew she was exposing herself when she bent over she continued on doing the same things, and wearing the same clothes.
It just so happened that about a month later, on the morning of her special afternoon class day, while she was getting dressed her bra clasp broke and she only had one of the sheer ones to put on. (Naturally, I had helped to make sure it was broken). Since she was in a hurry she quickly got dressed, in a very modest blouse, and took off for school. I didn't say anything to her, but was convinced that she would somehow change her bra, or not wear a loose tank top, before her afternoon session. That day ended up being a busy one for me, and although I wanted to see what she was going to do, I couldn't get off in time to sit in on her class.
When I did finally get home everyone was gone, but I was surprised to see that she was dressed in a loose tank top, and was still wearing her sexy sheer bra. I asked about the class, but didn't bring up her attire. During the weeks that followed a pattern was established where every day that she had a class at the house she would always put on one of her sheer lacy bras. This would often be the only day of the week that she wore them. It seemed to be having a positive affect on her as each night after her class she was always eager for sex.
She was starting to get comfortable with this, so I began to compliment her each morning on her choice of underwear, and each evening reminded her how hot she looked.
Finally I managed to get home early one day and have a chance to sit in and visit with her students. That morning she had picked out a white lace bra that was quite sheer. It seemed that the students had more trouble than usual, as all of them needed her help with the words. I could see that as she bent over her breasts were completely exposed to each of the students; and although they were covered, her nipples clearly showed through the sheer white fabric. This bra was the sheerest one she owned, and she had also changed into the loosest tank top she had, so she was completely opening up her little lace covered titties for viewing. She knew what was going on, and when one of the boys lost his train of thought after asking her a question she actually started to laugh.
Later that night I asked her about it, and she seemed to think it was pretty funny. I guess she doesn't understand the affect a teacher can have on a male student. I had enjoyed the show, but wanted more, so I asked if she'd try it braless sometime. She didn't want to try it, she said that even though the bra was sheer she still felt dressed with it on. I encouraged her to try it sometime soon as our time in the country was almost at an end. After a lot of pestering she did finally say she'd think about it, but wouldn't promise anything.
It seemed that luck was on my side because that weekend one of the boys stopped in for a short visit. Sam was dressed for a casual weekend and wasn't wearing a bra yet since we'd just finished breakfast and she hadn't dressed for the day. She says that it was "without thinking" but soon after he sat down in the living room she leaned over to look at something and gave him a complete view of her bare breasts. She did this again two or three more times before she realized that his focus was not on the book, but on her breasts. She started to blush and seemed a little flustered by it all. I had been watching all of this and started to chuckle at her sudden discomfort. She excused herself, and went into the bedroom to find her bra. I followed her in and quickly talked her into staying dressed like she was, since she'd already shown him everything by now what did it matter, and he was enjoying the show more than I was.