| # | Flag | Country | Primary education, duration (years)Primary education, duration (years) | Year |
|---|---|---|---|---|
| 1 | Republic of Ireland | 8 | 2018 | |
| 2 | Guam | 8 | 2018 | |
| 3 | Trinidad and Tobago | 7 | 2018 | |
| 4 | Virgin Islands (British) | 7 | 2018 | |
| 5 | Saint Kitts And Nevis | 7 | 2018 | |
| 6 | Australia | 7 | 2018 | |
| 7 | Zambia | 7 | 2018 | |
| 8 | Saint Vincent and the Grenadines | 7 | 2018 | |
| 9 | Uganda | 7 | 2018 | |
| 10 | South Africa | 7 | 2018 | |
| 11 | Iceland | 7 | 2018 | |
| 12 | Swaziland | 7 | 2018 | |
| 13 | Grenada | 7 | 2018 | |
| 14 | Namibia | 7 | 2018 | |
| 15 | Tanzania | 7 | 2018 | |
| 16 | Bhutan | 7 | 2018 | |
| 17 | Botswana | 7 | 2018 | |
| 18 | Norway | 7 | 2018 | |
| 19 | Mozambique | 7 | 2018 | |
| 20 | Maldives | 7 | 2018 | |
| 21 | Lesotho | 7 | 2018 | |
| 22 | Denmark | 7 | 2018 | |
| 23 | Dominica | 7 | 2018 | |
| 24 | Saint Lucia | 7 | 2018 | |
| 25 | Zimbabwe | 7 | 2018 | |
| 26 | Antigua and Barbuda | 7 | 2018 | |
| 27 | Cuba | 6 | 2018 | |
| 28 | Cape Verde | 6 | 2018 | |
| 29 | Cyprus | 6 | 2018 | |
| 30 | Dominican Republic | 6 | 2018 | |
| 31 | Ecuador | 6 | 2018 | |
| 32 | Estonia | 6 | 2018 | |
| 33 | Egypt | 6 | 2018 | |
| 34 | Spain | 6 | 2018 | |
| 35 | Ethiopia | 6 | 2018 | |
| 36 | Finland | 6 | 2018 | |
| 37 | Fiji | 6 | 2018 | |
| 38 | Federated States of Micronesia | 6 | 2018 | |
| 39 | United Kingdom | 6 | 2018 | |
| 40 | Georgia | 6 | 2018 | |
| 41 | Ghana | 6 | 2018 | |
| 42 | Gambia | 6 | 2018 | |
| 43 | Guinea | 6 | 2018 | |
| 44 | Equatorial Guinea | 6 | 2018 | |
| 45 | Greece | 6 | 2018 | |
| 46 | Guatemala | 6 | 2018 | |
| 47 | Guinea-Bissau | 6 | 2018 | |
| 48 | Guyana | 6 | 2018 | |
| 49 | Hong Kong | 6 | 2018 | |
| 50 | Honduras | 6 | 2018 | |
| 51 | Curacao | 6 | 2018 | |
| 52 | Afghanistan | 6 | 2018 | |
| 53 | Angola | 6 | 2018 | |
| 54 | Argentina | 6 | 2018 | |
| 55 | Aruba | 6 | 2018 | |
| 56 | Barbados | 6 | 2018 | |
| 57 | Belgium | 6 | 2018 | |
| 58 | Burkina Faso | 6 | 2018 | |
| 59 | Bahrain | 6 | 2018 | |
| 60 | Burundi | 6 | 2018 | |
| 61 | Benin | 6 | 2018 | |
| 62 | Bermuda | 6 | 2018 | |
| 63 | Brunei | 6 | 2018 | |
| 64 | Bolivia | 6 | 2018 | |
| 65 | The Bahamas | 6 | 2018 | |
| 66 | Belize | 6 | 2018 | |
| 67 | Canada | 6 | 2018 | |
| 68 | Democratic Republic Of Congo | 6 | 2018 | |
| 69 | Central African Republic | 6 | 2018 | |
| 70 | Republic of the Congo | 6 | 2018 | |
| 71 | Switzerland | 6 | 2018 | |
| 72 | Ivory Coast | 6 | 2018 | |
| 73 | Chile | 6 | 2018 | |
| 74 | Cameroon | 6 | 2018 | |
| 75 | China | 6 | 2018 | |
| 76 | Costa Rica | 6 | 2018 | |
| 77 | Malaysia | 6 | 2018 | |
| 78 | Niger | 6 | 2018 | |
| 79 | Nigeria | 6 | 2018 | |
| 80 | Nicaragua | 6 | 2018 | |
| 81 | Netherlands | 6 | 2018 | |
| 82 | Nauru | 6 | 2018 | |
| 83 | New Zealand | 6 | 2018 | |
| 84 | Oman | 6 | 2018 | |
| 85 | Panama | 6 | 2018 | |
| 86 | Peru | 6 | 2018 | |
| 87 | Papua New Guinea | 6 | 2018 | |
| 88 | Philippines | 6 | 2018 | |
| 89 | Poland | 6 | 2018 | |
| 90 | Puerto Rico | 6 | 2018 | |
| 91 | Portugal | 6 | 2018 | |
| 92 | Palau | 6 | 2018 | |
| 93 | Paraguay | 6 | 2018 | |
| 94 | Qatar | 6 | 2018 | |
| 95 | Rwanda | 6 | 2018 | |
| 96 | Saudi Arabia | 6 | 2018 | |
| 97 | Solomon Islands | 6 | 2018 | |
| 98 | Seychelles | 6 | 2018 | |
| 99 | Sudan | 6 | 2018 | |
| 100 | Sweden | 6 | 2018 | |
| 101 | Singapore | 6 | 2018 | |
| 102 | Slovenia | 6 | 2018 | |
| 103 | Sierra Leone | 6 | 2018 | |
| 104 | Senegal | 6 | 2018 | |
| 105 | Suriname | 6 | 2018 | |
| 106 | São Tomé and Príncipe | 6 | 2018 | |
| 107 | El Salvador | 6 | 2018 | |
| 108 | Syria | 6 | 2018 | |
| 109 | Turks And Caicos Islands | 6 | 2018 | |
| 110 | Chad | 6 | 2018 | |
| 111 | Togo | 6 | 2018 | |
| 112 | Thailand | 6 | 2018 | |
| 113 | East Timor | 6 | 2018 | |
| 114 | Tunisia | 6 | 2018 | |
| 115 | Tonga | 6 | 2018 | |
| 116 | Tuvalu | 6 | 2018 | |
| 117 | United States | 6 | 2018 | |
| 118 | Uruguay | 6 | 2018 | |
| 119 | Venezuela | 6 | 2018 | |
| 120 | Vanuatu | 6 | 2018 | |
| 121 | Samoa | 6 | 2018 | |
| 122 | Yemen | 6 | 2018 | |
| 123 | South Sudan | 6 | 2018 | |
| 124 | Marshall Islands | 6 | 2018 | |
| 125 | Virgin Islands (US) | 6 | 2018 | |
| 126 | American Samoa | 6 | 2018 | |
| 127 | Sint Maarten | 6 | 2018 | |
| 128 | Andorra | 6 | 2018 | |
| 129 | Haiti | 6 | 2018 | |
| 130 | Indonesia | 6 | 2018 | |
| 131 | Israel | 6 | 2018 | |
| 132 | Iraq | 6 | 2018 | |
| 133 | Iran | 6 | 2018 | |
| 134 | Jamaica | 6 | 2018 | |
| 135 | Jordan | 6 | 2018 | |
| 136 | Japan | 6 | 2018 | |
| 137 | Kenya | 6 | 2018 | |
| 138 | Cambodia | 6 | 2018 | |
| 139 | Kiribati | 6 | 2018 | |
| 140 | Comoros | 6 | 2018 | |
| 141 | South Korea | 6 | 2018 | |
| 142 | Cayman Islands | 6 | 2018 | |
| 143 | Lebanon | 6 | 2018 | |
| 144 | Liberia | 6 | 2018 | |
| 145 | Luxembourg | 6 | 2018 | |
| 146 | Latvia | 6 | 2018 | |
| 147 | Libya | 6 | 2018 | |
| 148 | Morocco | 6 | 2018 | |
| 149 | Mali | 6 | 2018 | |
| 150 | Macao | 6 | 2018 | |
| 151 | Mauritania | 6 | 2018 | |
| 152 | Malta | 6 | 2018 | |
| 153 | Mauritius | 6 | 2018 | |
| 154 | Malawi | 6 | 2018 | |
| 155 | Mexico | 6 | 2018 | |
| 156 | Albania | 5 | 2018 | |
| 157 | Kuwait | 5 | 2018 | |
| 158 | United Arab Emirates | 5 | 2018 | |
| 159 | Laos | 5 | 2018 | |
| 160 | Algeria | 5 | 2018 | |
| 161 | Liechtenstein | 5 | 2018 | |
| 162 | Sri Lanka | 5 | 2018 | |
| 163 | French Polynesia | 5 | 2018 | |
| 164 | Djibouti | 5 | 2018 | |
| 165 | San Marino | 5 | 2018 | |
| 166 | Pakistan | 5 | 2018 | |
| 167 | Monaco | 5 | 2018 | |
| 168 | Montenegro | 5 | 2018 | |
| 169 | Madagascar | 5 | 2018 | |
| 170 | Republic of Macedonia | 5 | 2018 | |
| 171 | Myanmar | 5 | 2018 | |
| 172 | Mongolia | 5 | 2018 | |
| 173 | Vietnam | 5 | 2018 | |
| 174 | Bangladesh | 5 | 2018 | |
| 175 | Brazil | 5 | 2018 | |
| 176 | Romania | 5 | 2018 | |
| 177 | Czech Republic | 5 | 2018 | |
| 178 | Gabon | 5 | 2018 | |
| 179 | Colombia | 5 | 2018 | |
| 180 | India | 5 | 2018 | |
| 181 | New Caledonia | 5 | 2018 | |
| 182 | Bosnia and Herzegovina | 5 | 2018 | |
| 183 | France | 5 | 2018 | |
| 184 | Italy | 5 | 2018 | |
| 185 | Nepal | 5 | 2018 | |
| 186 | Eritrea | 5 | 2018 | |
| 187 | North Korea | 5 | 2018 | |
| 188 | Russia | 4 | 2018 | |
| 189 | Hungary | 4 | 2018 | |
| 190 | Turkmenistan | 4 | 2018 | |
| 191 | Lithuania | 4 | 2018 | |
| 192 | Austria | 4 | 2018 | |
| 193 | Kazakhstan | 4 | 2018 | |
| 194 | Ukraine | 4 | 2018 | |
| 195 | Slovakia | 4 | 2018 | |
| 196 | Serbia | 4 | 2018 | |
| 197 | Turkey | 4 | 2018 | |
| 198 | Armenia | 4 | 2018 | |
| 199 | Croatia | 4 | 2018 | |
| 200 | Uzbekistan | 4 | 2018 | |
| 201 | Belarus | 4 | 2018 | |
| 202 | Kyrgyzstan | 4 | 2018 | |
| 203 | Bulgaria | 4 | 2018 | |
| 204 | Tajikistan | 4 | 2018 | |
| 205 | Azerbaijan | 4 | 2018 | |
| 206 | Moldova | 4 | 2018 | |
| 207 | Germany | 4 | 2018 |