# Grade School

Given students' names along with the grade that they are in, create a roster
for the school.

In the end, you should be able to:

- Add a student's name to the roster for a grade
  - "Add Jim to grade 2."
  - "OK."
- Get a list of all students enrolled in a grade
  - "Which students are in grade 2?"
  - "We've only got Jim just now."
- Get a sorted list of all students in all grades.  Grades should sort
  as 1, 2, 3, etc., and students within a grade should be sorted
  alphabetically by name.
  - "Who all is enrolled in school right now?"
  - "Grade 1: Anna, Barb, and Charlie. Grade 2: Alex, Peter, and Zoe.
    Grade 3…"

Note that all our students only have one name.  (It's a small town, what
do you want?)


## For bonus points

Did you get the tests passing and the code clean? If you want to, these
are some additional things you could try:

- If you're working in a language with mutable data structures and your
  implementation allows outside code to mutate the school's internal DB
  directly, see if you can prevent this. Feel free to introduce additional
  tests.

Then please share your thoughts in a comment on the submission. Did this
experiment make the code better? Worse? Did you learn anything from it?


## Getting Started
For installation and learning resources, refer to the
[exercism help page](http://exercism.io/languages/ocaml).

## Installation
To work on the exercises, you will need `Opam` and `Core`. Consult [opam](https://opam.ocaml.org) website for instructions on how to install `opam` for your OS. Once `opam` is installed open a terminal window and run the following command to install core:

```bash
opam install core
```

To run the tests you will need `OUnit`. Install it using `opam`:

```bash
opam install ounit
```

## Running Tests
A Makefile is provided with a default target to compile your solution and run the tests. At the command line, type:

```bash
make
```

## Interactive Shell
`utop` is a command line program which allows you to run Ocaml code interactively. The easiest way to install it is via opam:
```bash
opam install utop
```
Consult [utop](https://github.com/diml/utop/blob/master/README.md) for more detail.

## Feedback, Issues, Pull Requests
The [exercism/ocaml](https://github.com/exercism/ocaml) repository on
GitHub is the home for all of the Ocaml exercises.

If you have feedback about an exercise, or want to help implementing a new
one, head over there and create an issue.  We'll do our best to help you!

## Source

A pairing session with Phil Battos at gSchool [http://gschool.it](http://gschool.it)

## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.