Yes very much so. And in fact you could already tell that that was not going to be the right answer, because also in high school, you learned that some species

Yes very much so. And in fact you could already tell that that was not going to be the right answer, because also in high school, you learned that some species don't reproduce sexually. In fact even within sexual species there are a whole range of reproductive incompatabilities: from anatomical incompatibility, to impossible fertilisation, developmental dead-ends, through to live but infertile offspring, and seemingly viable offspring with dramatically lower environmental fitness. Species are an organising model, very useful in a lot of biological reasoning, but they are not a biological absolute. In general, whenever you were taught something black-and-white with hard boundaries in high school science, they were probably oversimplifying.