diff --git a/local/stats/amcstats b/local/stats/amcstats
new file mode 100755
index 0000000..ef90bc8
--- /dev/null
+++ b/local/stats/amcstats
@@ -0,0 +1,58 @@
+#!/usr/bin/env php
+<?php
+
+require_once(dirname(__FILE__).'/lib/lib_amcstats.php');
+
+$shortopts = '';
+$shortopts .= 'f:';
+$shortopts .= 'h';
+
+$longopts = array(
+	'help',
+	'csv:',
+	);
+
+$options = getopt($shortopts, $longopts);
+
+if (empty($options) or array_key_exists('h', $options) or array_key_exists('help', $options)) {
+	echo "USAGE: ".basename(__FILE__)." [parameters (see below)]
+
+\tDo statistics:
+\t\t-f|--csv filename[,filename]\n\n";
+echo "\tHelp:
+\t\t-h|--help\n\n";
+	echo "\n";
+	echo "e.g.: ".basename(__FILE__)." -h\n";
+	echo "e.g.: ".basename(__FILE__)." --csv toto.csv,titi.csv\n";
+	exit;
+}
+
+if (!empty($options['csv'])) $csv = $options['csv'];
+if (!empty($options['f'])) $csv = $options['f'];
+
+echo $csv."\n";
+
+$files = array_unique(explode(',', $csv));
+
+$EC = new ExamCalcs();
+
+foreach($files as $filename) {
+	if(!is_file($filename)) {
+		# Erreur, fichier pas trouve.
+		echo "File not found: $filename\n";
+		exit;
+	}
+	$EC->addFile('maxime', $filename );
+}
+
+
+
+
+
+$EC->sortByTotalPoints(true);
+$EC->filterByTeachers(array('maxime', 'perret'), true);
+$EC->doStats();
+
+exit;
+
+?>
diff --git a/local/stats/lib/lib_amcstats.php b/local/stats/lib/lib_amcstats.php
new file mode 100755
index 0000000..4751b68
--- /dev/null
+++ b/local/stats/lib/lib_amcstats.php
@@ -0,0 +1,245 @@
+<?php
+
+# some functions for array_maps
+function clean_array($string) { return preg_replace('/"/', '', $string); }
+function decimal_conversion($string) { return preg_replace('/,/', '.', $string); }
+function square($n) { return($n*$n); }
+
+# standard deviation function (if PECL stats not available)
+if (!function_exists('stats_standard_deviation')) {
+    function stats_standard_deviation(array $a, $sample = false) {
+        $n = count($a);
+        if ($n === 0) {
+            trigger_error("The array has zero elements", E_USER_WARNING);
+            return false;
+        }
+        if ($sample && $n === 1) {
+            trigger_error("The array has only 1 element", E_USER_WARNING);
+            return false;
+        }
+        $mean = array_sum($a)/$n;
+        $carry = 0.0;
+        foreach ($a as $val) {
+            $d = ((double) $val) - $mean;
+            $carry += $d * $d;
+        }
+        if ($sample) --$n;
+        return sqrt($carry / $n);
+    }
+}
+
+class AmcReader {
+	protected $filename = null;
+	protected $teacher = null;
+	protected $raw_data = null;
+	protected $columns = null;
+	protected $students = null;
+
+	public function __construct($filename, $teacher = "prof") {
+		if (!file_exists($filename))
+			throw new Exception('File not found: '.$filename);
+		$this->filename = $filename;
+
+		$this->teacher = $teacher;
+
+		$raw_data = file($this->filename, FILE_IGNORE_NEW_LINES);
+		$this->raw_data = array();
+		foreach($raw_data as $line) {
+			$line = array_map("clean_array", explode(';', $line));
+			$line =  array_map("decimal_conversion", $line);
+			$this->raw_data[] = $line;
+		}
+		$this->parseHeader();
+		$this->parseStudents();
+	}
+
+	public function getStudents() {
+		return $this->students;
+	}
+
+	protected function parseHeader() {
+		foreach($this->raw_data[0] as $col_id => $value) {
+			// Analyse header from CSV file, based on content
+			$item = array();
+			switch ($value) {
+				case "ID":
+				case "NAME":
+				case "EMAIL":
+				case "SECTION":
+				case "Mark":
+					$item['name'] = $value;
+					$item['type'] = "info";
+					break;
+				case "SCIPER":
+					$item['name'] = $value;
+					$item['type'] = "unique_id";
+					break;
+				default:
+					$item['name'] = $value;
+					if (preg_match('/^TICKED:/', $value)) {
+						$item['name'] = preg_replace('/^TICKED:/', '', $value);
+						$item['type'] = "ticked";
+					} else {
+						$item['type'] = "question";
+						$item['subtype'] = $this->guessSubtype($col_id);
+					}
+					
+			}
+			// Stats will be computed at a later stage
+			$item['stats'] = null;
+			$this->columns[] = $item;
+		}
+	}
+
+	protected function guessSubtype($col_id) {
+		$subtype = null;
+		//$ticked_col = $this->getColIdsByType('ticked', $this->getQuestionNameByColId($col_id));
+		$min_points = 0;
+		$max_points = 0;
+		foreach($this->raw_data as $line) {
+			if (preg_match('/\./', $line[$col_id]))	return 'open';
+			if ($line[$col_id] > $max_points) $max_points = $line[$col_id];
+		}
+
+		if ($max_points == 3) return 'mc';
+		if ($max_points == 1) return 'tf';
+		return 'unknown';
+	}
+
+	protected function getColIdByName($name) {
+		foreach ($this->columns as $id => $col) if ($col['name'] == $name) return $id;
+		throw new Exception('Column not found: '.$name);
+	}
+
+	protected function getColIdsByType($type, $name = null) {
+		$ids = array();
+		if (is_null($name)) {
+			foreach ($this->columns as $id => $col) if ($col['type'] == $type) $ids[] = $id;
+		} else {
+			foreach ($this->columns as $id => $col) if ($col['type'] == $type and $col['name'] == $name) $ids[] = $id;
+		}
+		if (count($ids) == 0) {
+			if (is_null($name)) throw new Exception('Column type not found: '.$type);
+			throw new Exception('Column type not found: '.$type.'/'.$name);
+		}
+		if (count($ids) == 1) return $ids[0];
+		return $ids;
+	}
+
+	protected function getQuestionNameByColId($id) {
+		if (array_key_exists($id, $this->columns) and $this->columns[$id]['type'] == 'question')
+			return $this->columns[$id]['name'];
+		throw new Exception('Column not found, or is not a question: '.$id);
+	}
+
+	protected function parseStudents() {
+		foreach($this->raw_data as $line => $student) {
+			if ($line == 0) continue; // skip header
+
+			$data = array('teacher' => $this->teacher);
+			foreach(array('ID', 'SCIPER', 'NAME', 'EMAIL', 'SECTION') as $key) {
+				$data[$key] = $student[$this->getColIdByName($key)];
+			}
+
+			// Get points
+			$points = array();
+			$data['items'] = array();
+			foreach($this->getColIdsByType('question') as $col) {
+				$item = array();
+				$item['name'] = $this->getQuestionNameByColId($col);
+				$item['points'] = (float)$student[$col];
+				$points[] = $item['points'];
+				$item['ticked'] = $student[$this->getColIdsByType('ticked', $item['name'])];
+				$item['type'] = $this->columns[$col]['type'];
+				$item['subtype'] = $this->columns[$col]['subtype'];
+				$data['items'][] = $item;
+			}
+
+			$data['total'] = array_sum($points);
+
+			$data['present'] = (int)(array_sum(array_map("square", $points))>0);
+
+			if (preg_match('/^FAKE/', $data['SCIPER'])) {
+				if ($data['present']) $data['type'] = 'unregistered';
+				else $data['type'] = 'unused';
+			} else $data['type'] = 'student';
+
+			$this->students[] = $data;
+		}
+	}
+}
+
+// Compare students on total (higher to lower)
+function cmp_total($a, $b)
+{
+    if ($a['total'] == $b['total']) {
+        return 0;
+    }
+    return ($a['total'] < $b['total']) ? 1 : -1;
+}
+
+class ExamCalcs {
+	protected $dataset = null;
+	protected $tmp_dataset = null;
+
+	public function __construct($dataset = null) {
+		$this->dataset = array();
+		if (!is_null($dataset)) $this->dataset = $dataset;
+	}
+
+	public function addFile($teacher, $teacher_file) {
+		echo "Adding $teacher ($teacher_file) to the dataset.\n";
+		$AR = new AmcReader($teacher_file, $teacher);
+		$this->addDataSet($AR->getStudents());
+	}
+
+	public function addDataSet($data) {
+		foreach ($data as $student) $this->dataset[] = $student;
+	}
+
+	public function filterByTeachers($teachers, $update = true) {
+		$this->tmp_dataset = array();
+		foreach ($this->dataset as $student) {
+			if (is_array($teachers)) {
+				if (in_array($student['teacher'], $teachers))
+					$dataset[] = $student;
+			} else {
+				if ($student['teacher'] == $teachers)
+					$dataset[] = $student;
+			}
+		}
+		if ($update) $this->dataset = $dataset;
+		return $dataset;
+	}
+
+	public function sortByTotalPoints($update = true) {
+		if ($update) {
+			usort($this->dataset, "cmp_total");
+			return $this->dataset;
+		} else {
+			$dataset = $this->dataset;
+			usort($dataset, "cmp_total");
+			return $dataset;
+		}
+	}
+
+	public function getDataSet() {
+		return $this->dataset;
+	}
+
+	public function doStats() {
+		$stats = array();
+		$stats['presence'] = array();
+		foreach($this->dataset as $student) {
+			if (!array_key_exists($student['type'], $stats['presence'])) {
+				$stats['presence'][$student['type']] = 1;
+			} else {
+				$stats['presence'][$student['type']] += 1;
+			}
+		}
+		print_r($stats);
+	}
+
+}
+
+?>